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Hoechst33342染色液(1mg/ml)

一键复制产品信息

货号:AWC0306

价格: ¥160

规格: 1ml 5ml

  • 产品概述
  • Hoechst 33342染色液(1mg/ml)

    产品简介:

    Hoechst 33342,也称bisBenzimide H 33342或HOE 33342,是一种可以穿透细胞膜的蓝色荧光染料,对细胞的毒性较低。Hoechst33342染色常用于细胞凋亡检测,染色后用荧光显微镜观察或流式细胞仪检测。Hoechst 33342也常用于普通的细胞核染色,或常规的 DNA染色。Hoechst 33342的最大激发波长为346nm,最大发射波长为460nm;Hoechst 33342和双链DNA结合后,最大激发波长为350nm,最大发射波长为461nm。本Hoechst 33342染色液为即用型,可直接用于固定细胞或组织的细胞核染色,也可直接用于活细胞或组织的细胞核染色。

    操作步骤(仅供参考):

    使用前用生理盐水或PBS将Hoechst 33342染色液稀释100倍,即为工作液。

    1、 对于固定的细胞或组织:

    a. 对于细胞或组织样品,固定后,适当洗涤去除固定剂。随后如果需要进行免疫荧光染色,则先进行免疫荧光染色,染色完毕后再按后续步骤进行Hoechst 33342染色。如果不需要进行其它染色,则直接进行后续的Hoechst 33342染色。

    b. 对于贴壁细胞或组织切片,加入少量Hoechst 33342工作液,覆盖住样品即可;对于悬浮细胞,至少加入待染色样品3倍体积的工作液,混匀。室温放置3-5分钟。

    c. 吸除Hoechst 33342染色液,用TBST、PBS或生理盐水洗涤2-3次,每次3-5分钟。

    d. 直接在荧光显微镜下观察或封片后荧光显微镜下观察。细胞发生凋亡时,会看到凋亡细胞的细胞核呈致密浓染,或呈碎块状致密浓染。

    2、 对于活细胞或组织:

    a. 加入适当量Hoechst 33342工作液,必须充分覆盖住待染色的样品,通常对于六孔板一个孔需加入1ml工作液,对于96孔板一个孔需加入100μl工作液。

    b. 在适宜于细胞培养的温度下培养20-30分钟。弃染色液,用PBS或培养液洗涤2-3次即可进行荧光检测。

    注意事项:

    1、 荧光染料都存在淬灭的问题,为减缓荧光淬灭可以使用抗荧光衰减封片剂。建议染色后尽量当天完成检测,活细胞或组织染色后应立即观察。

    1、 为了您的安全和健康,请穿好实验服并佩戴一次性手套和口罩操作。

    2、 本产品仅限于专业人员的科学研究用,不得用于临床诊断或治疗,不得用于食品或药品,不得存放于普通住宅内。

    产品组成
    名称货号规格storage
    Hoechst 33342染色液(1mg/ml)AWC0306-1ml1ml-20℃,避光
    Hoechst 33342染色液(1mg/ml)AWC0306-5ml5ml-20℃,避光

    注意:

    1.本产品仅供科研使用。请勿用于医药、临床诊断或治疗。食品及化妆品等用途。请勿存放于普通住宅区。

    2.为了您的安全和健康,请穿好实验服并佩戴一次性手套和口罩操作。

    3.实验结果可由多种因素影响,相关处理只限于产品本身,不涉及其他赔偿。


    参考文献 (2)

    Biomaterials Research IF:9.6

    Although tea consumption has been suggested to affect kidney stone formation, epidemiological evidence remains inconsistent, and the underlying molecular mechanisms are unclear. To assess the association between tea intake and kidney stone risk, we initially conducted a prospective cohort analysis of 481,393 participants from the UK Biobank and a 2-sample Mendelian randomization (MR) analysis. Our findings revealed that heavy tea drinkers (>5 cups/day) had a significantly reduced risk of kidney stones (hazard ratio: 0.79, 95% confidence interval [CI]: 0.72 to 0.86, P < 0.001), and MR analyses confirmed a causal association (inverse variance weighted OR: 0.45, 95% CI: 0.32 to 0.62, P < 0.001). We next explored the effect of epigallocatechin gallate (EGCG), the main bioactive component in tea, on calcium oxalate (CaOx) stone formation. EGCG was found to inhibit the glucose-regulated protein 94/phosphatidylinositol 3-kinase/protein kinase B (GRP94/PI3K/AKT) pathway in human proximal renal tubular epithelial cells, thereby attenuating CaOx crystal-induced oxidative stress and inflammation, and inhibiting crystal-cell adhesion. This finding aligned with the observation that the activated GRP94/PI3K/AKT pathway was positively associated with inflammation-related molecules in renal papillary tissues of CaOx stone formers. Moreover, to enhance renal targeting and therapeutic potential, we synthesized cell membrane-coated EGCG-loaded poly(lactic-co-glycolic acid) (TP-EGCG) nanoparticles, which enhanced renal EGCG delivery and substantially reduced CaOx crystal deposition in a mouse model of CaOx nephrolithiasis. In conclusion, tea consumption protects against kidney stone formation, an effect exerted by EGCG through the GRP94/PI3K/AKT axis, and our novel TP-EGCG nanoparticles show strong potential for targeted prevention and treatment.

    JOURNAL OF ETHNOPHARMACOLOGY IF:4.8

    Ethnopharmacological relevance WuHuTang (WHT) is a traditional Chinese medicine compound for treating asthma, and the evidence supports that it has a good effect on acute asthma attacks in children and adults. Respiratory syncytial virus (RSV) is an important factor in the pathogenesis of acute asthma attacks, and the effect on dendritic cells is the key to its pathogenesis. Previous studies have confirmed that the pathogenesis of viruses is related to exosomes. However, there are few studies on the exosomes induced by RSV. Whether WHT can improve the changes caused by RSV-induced exosomes or not is worthy of further exploration. Aim of the study We aim to study the effects of RSV-induced exosomes on the function and autophagy of dendritic cells, and to observe the intervention effect of WHT serum on the above effects. Methods The co-culture model of exosomes derived from bone marrow mesenchymal stem cells induced by RSV (BMSCs-Exo-RSV) and dendritic cells was established, and then WHT serum was used to intervene. After 24 h of intervention, the CCK-8 method, flow cytometry, Elisa, RT-qCPR, and Western blot were used to detect the above-mentioned culture model. Results RSV-induced exosomes had certain effects on viability, apoptosis, and costimulatory molecules generation of dendritic cells. At the same time, the levels of IL-6, IL-12, TNF-α, and autophagy increased, while the levels of IL-4, IL-10, and TGF-β decreased, and the AKT/TSC/mTOR pathway was inhibited. WHT serum could activate this pathway and reverse the above changes in dendritic cells. Conclusion This study reveals that the pathogenic effect of RSV is related to the exosomes induced by RSV. The exosomes induced by RSV affect the function of dendritic cells by inhibiting the AKT/TSC/mTOR pathway, which can be activated by WHT to reverse the effects caused by RSV-induced exosomes.

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