• 제목/요약/키워드: bombyx mori nuclear polyhedrosis virus

검색결과 65건 처리시간 0.022초

Neo-PPS 훈증에 의한 잠체 소독에 관한 연구(I) -누에 바이러스병에 대한 약효- (Application of Neo-PPS Fumigation to the Disinfection of the Silkworm Larvae, Bombyx mori(L.), for the Control of Silkworm Diseases(I) Effect of Neo-PPS Fumigation on the Virus Diseases)

  • 임종성;김근영
    • 한국잠사곤충학회지
    • /
    • 제18권2호
    • /
    • pp.79-81
    • /
    • 1976
  • Neo-PPS의 누에 바이러스병에 대한 약효에 관한 시험을 통해 다음과 같은 결과를 얻었다. 1. 핵다각체 바이러스에 대한 약효는 무처리에 비해 2, 4 및 6시간 처리는 월등히 좋은 효과를 나타냈다. 2. 세포질다각체 바이러스에 대한 약효는 핵다각체 바이러스에서와 동일했다.

  • PDF

새로운 Baculovirus 전이벡터를 이용한 Escherichia coli ${\beta}$-galactosidase 유전자의 발현 (Expression of Escherichia coli ${\beta}$-galactosidase Gene by New Transfer Vector of Baculovirus)

  • 우수동;김우진;김혜성;진병래;강석권
    • 한국미생물·생명공학회지
    • /
    • 제24권1호
    • /
    • pp.72-76
    • /
    • 1996
  • To investigate the expression efficiency of new transfer vector of Bombyx mori nuclear polyhedrosis virus (BmNPV), Escherichia coli lacZ gene was inserted into new transfer vector pBmKSK1, under the control of polyhedrin promoter and expressed in BmN-4 cells and larvae of silkworm, Bombyx mori. The recombinant virus containing lacZ gene was isolated from BmN-4 cells coinfected with transfer vectro pBmKSK1-LacZ and wild type BmNPV genome, and analysed by Southern blotting. The expression of ${\beta}$-galactosidase was characterized by SDS-PAGE, Western blotting and ${\beta}$-galactosidase activity assay. The results showed that the level of expression in silkworm larvae was higher than that of BmN-4 cells.

  • PDF

PCR법에 의한 잠실먼지 중 핵다각체병 바이러스의 검출 (Detection of Bombyx mori Nuclear Polyhedrosis Virus(BmNPV) in dust of Silkworm rearing room by PCR)

  • 남성희;한명세
    • 한국잠사곤충학회지
    • /
    • 제39권1호
    • /
    • pp.30-35
    • /
    • 1997
  • A rapid and sensitive detection of BmNPV contamination in silkworm rearing room was carried by Plymerase chain reaction(PCR). Silkworm nuclear polyhedra were dissolved for the extraction of viral DNA within 30 minutes followed by the treatment of alkaline solution. The combination of primers of NP3 and NP2 was superior in PCR to the other 7 primers applied. Each primer was designed with 20 base in size and Newly designed NP3 of sense and the already reported NP2 for antisense were better in reaction than other primers. PCR products appeared 500bp in size. And annealing was confirmed proper at 55$^{\circ}C$ condition. Amplifiable template DNA amount was confirmed at least 100 ng to 0.1 ng and regarded as applicative for the assay of silkworm rearing environmental condition of sericultural farm. In case of the detection of BmNPV from the dust, sensitivity by PCR was as high as 1,000,000 times than that of microscopic observation.

  • PDF

누에 핵다각체병 바이러스의 세포증식에 대한 누에 체액의 영향 (Effect of Hemolymph of Silkworm Larvae on the Multiplication of Bombyx mori Nuclear Polyhedrosis Virus in BmN-4 Cells)

  • 우수동;김우진;진병래;강석권
    • 한국잠사곤충학회지
    • /
    • 제37권1호
    • /
    • pp.52-56
    • /
    • 1995
  • Baculovirus 발현계에서 BmNPV의 증식효율을 향상시키기 위하여, 누에 유충 체액의 BmN-4 세포주에서 BmNPV 증식에 미치는 영향을 조사하였다. 5령 3일째의 누에 유충으로 부터 체액을 추출하여 BmN-4 배양액에 첨가한 결과, 열처리하지 않은 누에 체액의 첨가는 세포의 응집과 소형화 현상으로 인해 세포의 증식을 저해한 반면, $65^{\circ}C$에서 30분간 열처리한 체액 10%와 FBS 3%를 세포배양액에 첨가한 것이 바이러스 감염에 의해 방출된 다각체의 수가 가장 많은 것으로 나타나 바이러스 증식에 가장 효과적이었다. 또한 plaque assay 결과, 체액의 첨가에 의한 바이러스 증식효율의 증가는 세포의 증식에 의한 것이라기보다 바이러스 감염성의 증가에 기인하는 것으로 보여진다.

  • PDF

Screening of Domestic Silkworm Strains for Efficient Heterologous Protein Expression by Bombyx mori Nuclear Polyhedrosis Virus (BmNPV)

  • Jo, Sun Jung;Choi, Ji-Hyun;Kang, Ju-Il;Lim, Jae-Hwan;Seok, Young Sik;Lee, Jae Man;Kusakabe, Takahiro;Hong, Sun Mee
    • International Journal of Industrial Entomology and Biomaterials
    • /
    • 제29권2호
    • /
    • pp.185-192
    • /
    • 2014
  • Recombinant proteins can be generated quickly and easily in large amounts and at low-cost in silkworm larvae by using Bombyx mori nuclear polyhedrosis virus (BmNPV). We searched for high-permissive silkworm strains that have high production levels of heterologous proteins and are thus suitable for use as biofactories. In this study, we performed the analysis using a BmNPV vector expressing luciferase as a marker, and we confirmed protein expression by evaluating luciferase activity, determined by western blotting and luciferase ELISA, and confirmed transcription expression by semi- and quantitative real time PCR. For the selection of host silkworm strains, we first chose 52 domestic BmNPV sensitive strains and then identified 10 high-permissive and 5 low-permissive strains. In addition, to determine which hybrid of the high-permissive strains would show heterosis, nine strains derived through three-way crossing were tested for luciferase activity by western blotting, and luciferase ELISA. We found a correlation between luciferase activity and luciferase protein expression, but not transcription. There was no noticeable difference in protein expression levels between Jam313 as the high-permissive control strain and the three-way hybrid strains; however, the three-way cross strains showed lower luciferase activity compared with Jam313. In this study, luciferase protein production in the larvae of 52 domestic silkworm strains was elucidated using BmNPV.

가잠 핵다각체병 바이러스 초기감염에 관한 전자현미경적 관찰 (Electron Microscopic Observations on the tissues infected with Nuclear Polyhedosis Virus of Bombyx mori during eary stage)

  • 유강선;강석권
    • 한국잠사곤충학회지
    • /
    • 제32권1호
    • /
    • pp.49-57
    • /
    • 1990
  • 가잠 다각체병 바이러스의 감염경로를 연구하기 위해서 2령 기잠에 바이러스를 접종하고 6, 12, 24, 48시간의 감염조직을 전자현미경 관찰한 결과는 다음과 같다. 1. 다각체단백질이 중장소화액에 의해 용해되어져 바이러스입자가 유리되고 섬모융모표면에서 부터 흡착되는 것이 관찰되었다. 2. 다각체 접종 후 24시간에 이미 중장원통세포핵에 현저한 증식상을 보였으며 중장피막세포 간극에서 envelope을 획득한 바이러스입자가 관찰되었다. 3. 기저막 가까이 있는 원통세포의 세포질에서 envelope을 획득한 바이러스입자들이 다수 관찰되었으며, envelope을 가지고 있지 않은 바이러스는 관찰되지 않았다. 기저막을 통과한 바이러스입자는 체강쪽으로 이행되어져 혈구세포에 집적되고 있다. 4. 접종후 48시간에 중장피막 가까이에 분포하고 있는 혈구세포 및 기관피막세포핵에서 NPV의 전형적인 증식상이 관찰되었다.

  • PDF