• 제목/요약/키워드: $cav2^{–/–}$ mouse

검색결과 6건 처리시간 0.017초

Increased Caveolin-2 Expression in Brain Endothelial Cells Promotes Age-Related Neuroinflammation

  • Hyunju, Park;Jung A, Shin;Jiwoo, Lim;Seulgi, Lee;Jung-Hyuck, Ahn;Jihee Lee, Kang;Youn-Hee, Choi
    • Molecules and Cells
    • /
    • 제45권12호
    • /
    • pp.950-962
    • /
    • 2022
  • Aging is a major risk factor for common neurodegenerative diseases. Although multiple molecular, cellular, structural, and functional changes occur in the brain during aging, the involvement of caveolin-2 (Cav-2) in brain ageing remains unknown. We investigated Cav-2 expression in brains of aged mice and its effects on endothelial cells. The human umbilical vein endothelial cells (HUVECs) showed decreased THP-1 adhesion and infiltration when treated with Cav-2 siRNA compared to control siRNA. In contrast, Cav-2 overexpression increased THP-1 adhesion and infiltration in HUVECs. Increased expression of Cav-2 and iba-1 was observed in brains of old mice. Moreover, there were fewer iba-1-positive cells in the brains of aged Cav-2 knockout (KO) mice than of wild-type aged mice. The levels of several chemokines were higher in brains of aged wild-type mice than in young wild-type mice; moreover, chemokine levels were significantly lower in brains of young mice as well as aged Cav-2 KO mice than in their wild-type counterparts. Expression of PECAM1 and VE-cadherin proteins increased in brains of old wild-type mice but was barely detected in brains of young wild-type and Cav-2 KO mice. Collectively, our results suggest that Cav-2 expression increases in the endothelial cells of aged brain, and promotes leukocyte infiltration and age-associated neuroinflammation.

소의 CSRP3, APOBEC2, Caveolin 유전자들의 단일염기다형 분석 (Analysis of SNPs in Bovine CSRP3, APOBEC2 and Caveolin Gene Family)

  • 삼술부이얀;유성란;김관석;윤두학;박응우;전진태;이준헌
    • Journal of Animal Science and Technology
    • /
    • 제49권6호
    • /
    • pp.719-728
    • /
    • 2007
  • CSRP3, APOBEC2, CAV1, CAV2 및 CAV3 유전자들은 포유동물에서 도체와 육질 형질에 중요한 역할을 하는 것으로 보고되고 있다. 따라서, 이 유전자들의 단일염기다형(Single nucleotide poly- morphism; SNP)을 8개의 다른 소의 품종에서 확인한 결과 coding region에서 caveolin family 유전자에서 9개의 SNP, CSRP3유전자에서 1개의 SNP 및 APOBEC2 유전자에서 3개의 SNP가 존재함을 확인하였다. 이 coding region의 SNP들은 PCR-RFLP 방법에 의해 재확인하였으며 이들 유전자의 intronic region에서도 9개의 SNP가 존재함을 확인할 수 있었다. 8개의 다른 품종 소에 각 유전자들의 SNP들을 이용하여 유전자 빈도를 확인한 결과 CAV2, CAV3, CSRP3 및 APOBEC2 유전자의 SNP 중에서 5개가 품종간에서 유의적으로 차이가 있음을 확인할 수 있었다. 이 SNP들은 차후 검증작업을 통하여 육질관련 형질 마커로 이용될 수 있을 것으로 사료된다.

miR-3074-3p promotes myoblast differentiation by targeting Cav1

  • Lee, Bora;Shin, Yeo Jin;Lee, Seung-Min;Son, Young Hoon;Yang, Yong Ryoul;Lee, Kwang-Pyo
    • BMB Reports
    • /
    • 제53권5호
    • /
    • pp.278-283
    • /
    • 2020
  • Muscle fibers are generally formed as multinucleated fibers that are differentiated from myoblasts. Several reports have identified transcription factors and proteins involved in the process of muscle differentiation, but the roles of microRNAs (miRNAs) in myogenesis remain unclear. Here, comparative analysis of the miRNA expression profiles in mouse myoblasts and gastrocnemius (GA) muscle uncovered miR-3074-3p as a novel miRNA showing markedly reduced expression in fully differentiated adult skeletal muscle. Interestingly, elevating miR-3074-3p promoted myogenesis in C2C12 cells, primary myoblasts, and HSMMs, resulting in increased mRNA expression of myogenic makers such as Myog and MyHC. Using a target prediction program, we identified Caveolin-1 (Cav1) as a target mRNA of miR-3074-3p and verified that miR-3074-3p directly interacts with the 3' untranslated region (UTR) of Cav1 mRNA. Consistent with the findings in miR-3074-3p-overexpressing myoblasts, knockdown of Cav1 promoted myogenesis in C2C12 cells and HSMMs. Taken together, our results suggest that miR-3074-3p acts a positive regulator of myogenic differentiation by targeting Cav1.

Effects of dietary acetaminophen and vitamin C supplement on serum cortisol and tumor necrosis factor-alpha concentrations in pigs vaccinated with foot-and-mouth disease vaccine

  • Cha, Chun-Nam;Lee, Beom-Jun;Park, Eun-Kee;Yoo, Chang-Yeol;Kim, Suk;Lee, Hu-Jang
    • 대한수의학회지
    • /
    • 제57권3호
    • /
    • pp.197-200
    • /
    • 2017
  • This study evaluated the effect of a combination of acetaminophen and vitamin C (CAV) on reducing serum cortisol and tumor necrosis $factor-{\alpha}$ ($TNF-{\alpha}$) concentrations in piglets vaccinated with foot-and-mouth disease (FMD) vaccine. Piglets were vaccinated with FMD vaccine and treated with CAV at concentrations of 0.0, 0.5, 1.0, and 2.0 kg/ton feed (P-CON, AD-1, AD-2, and AD-3, groups, respectively) for 5 days post-vaccination. Cortisol and $TNF-{\alpha}$ levels at 5 days post-treatment in the AD-1-3 groups were significantly lower than that in the P-CON group (p < 0.05). There were no significant differences between AD-2 and AD-3 groups and non-vaccinated, non-CAV-treated piglets.

Canine Distemper Virus에 대한 단클론성 항체의 생산 (The production of monoclonal antibodies against canine distemper virus)

  • 김태종;김세영
    • 대한수의학회지
    • /
    • 제37권2호
    • /
    • pp.375-381
    • /
    • 1997
  • The purpose of the production of monoclonal antibodies aganist the Canine distemper virus(CDV) were perfect diagnosis and a new approach to treat canine distemper because the diagnosis and treatment of canine distemper were difficult. Canine distemper virus(CDV) was purified using saturated ammonium sulfate, and injected into hind footpads of BALB/c mouse. 12-15 days later, popliteal lymph node(PN) cells were harvested and fused with SP2/O myeloma cells. Characteristics of monoclonal antibodies were analysed. 1. 9 hybridomas produce the specific antibody against CDV. 2. 6 monoclonal antibodies are against intranuclear and cytoplasmic component of CDV, and 3 monoclonal antibodies are against cytoplasmic inclusions. 3. All monoclonal antibodies did not react with other 5 different viruses (CAV-I, CAV-II, CCV, CPV and CPIV) and react with another CDV-FXNO strain. 4. 3 monoclonal antibodies have neutralizing activity against CDV. 5. Antigenic difference was observed between CDV by IFA.

  • PDF

L-type 칼슘 채널을 저해하는 저해제, nifedipine에 의한 쥐 뇌실하 영역 신경줄기세포의 신경세포로의 분화 촉진 (Increase in Neurogenesis of Neural Stem Cells Cultured from Postnatal Mouse Subventricular Zone by Nifedipine)

  • 박기엽;김만수
    • 생명과학회지
    • /
    • 제32권2호
    • /
    • pp.108-118
    • /
    • 2022
  • 뇌실하 영역은 뇌에서 신경줄기세포가 분포하는 곳으로 평생에 걸쳐 새로운 신경세포를 생성하는 곳이다. 많은 세포 안팎의 인자들이 신경줄기세포의 세포 증식과 신경세포로의 분화에 영향을 미친다. 최근 들어, L-type 칼슘 채널이 신경계의 발달을 조절하고 뇌실하 영역에 있는 신경줄기세포, 신경세포로 분화 중인 세포, 그리고 성숙한 신경세포에 분포한다고 밝혀졌다. L-type 칼슘 채널의 저해제인 nifedipine은 고혈압의 치료제로 오랜 기간 사용되어 왔다. 신경줄기세포에 nifedipine을 사용하여 L-type 칼슘 채널을 저해하는 연구는 많이 없는 상황이다. 이번 연구에서, 우리는 5일령 쥐의 뇌실하 영역에서 배양한 신경줄기세포에 nifedipine을 처리하여 신경세포로의 분화에 미치는 영향을 관찰하였다. Nifedipine은 Tuj1을 발현하는 신경세포의 수를 증가시킨 반면, Olig2를 발현하는 희소 돌기 아교 세포(oligodendrocytes)의 수에는 큰 영향을 미치지 않았다. Nifedipine은 S기를 표지하는 5-ethynyl-2'-deoxyuridine (EdU)가 들어간 세포의 수를 증가시켰고, 세포 분열시 나타나는 인산화된 히스톤 H3(PH3)를 발현하는 세포의 수를 증가시켰다. Nifedipine은 신경세포로의 분화를 촉진하는 Dlx2 유전자의 전사를 증가시켰고, 초기 신경세포에서 보이는 Mash1의 양도 증가시켰다. Nifedipine 외 또다른 L-type 칼슘 채널의 저해제인 verapamil을 처리하자, 신경세포로의 분화가 소폭 증가하였으나, 통계적 유의미성은 매우 낮았다. T-type 칼슘 채널의 저해제 유전자인 Cav3.1, Cav3.2, Cav3.3가 발현함을 관찰하여, T-type 칼슘 채널의 저해제인 pimozide를 신경줄기세포에 처리하였으나, 신경세포로의 분화에는 변화가 없었다. 이러한 결과를 통해 nifedipine이 신경줄기세포의 초기 분화를 증진함을 알 수 있으며, L-type 칼슘 채널이 신경세포로의 분화에 관여함을 알 수 있다.