上海中乔新舟生物科技有限公司是美国Sciencell公司在中国正规一级代理：

         美国ScienCell研究实验室（www.sciencellonline.com）成立于1999年，公司总部位于美国加州的圣地亚哥。主要致力于实验室科研用原代细胞、原代细胞专用培养基、原代细胞无血清培养基、干细胞、干细胞培养基、干细胞无血清培养基的研究和开发，在全球拥有众多客户。在国内销售15年来，很多老师应用其产品发表了高质量的SCI文章，且有着极高的文献引用率。凭借着严格的质控和优秀的产品品质，深受广大科研工作者的信赖。
         ScienCell研究实验室生产的原代细胞、原代细胞专用培养基都经过了严格的质量控制，细胞纯度可达98％。其中包括21种人体正常细胞系统，90多种不同细胞类型。大多数细胞在全球唯有ScienCell实验室能够成功分离，产品质量过硬。确保了实验结果的重复性和连贯性。

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产品：大鼠表皮角质细胞-新生
 

货号：R2100

Description

The epithelial layer of the skin provides an essential function as a protective barrier against insult from the outside environment. The major cell type in this layer is keratinocytes which consists around 85% of living epidermal cells. Keratinocytes are the cells of stratified squamous epithelia. It is so named because its most abundant protein is keratin. Keratinocyte divide and are thus generated in the basal layer of the epidermis; this division is followed by a programmed death as they produce keratin and move up to the surface of the epidermis. Keratinocyte proliferation, differentiation, and apoptosis are complex and carefully choreographed processes [1]. Besides the protective function, keratinocytes also play a central role in tissue homeostasis, wound healing, cancers, and skin-based gene-therapy. Keratinocytes express adhesion molecules and cytokines indicating their participation in skin innate immunity and homeostasis in vivo [2, 3].

REK-n from ScienCell Research Laboratories are isolated from neonate rat epidermal tissue. REK-n are cryopreserved on primary culture and delivered frozen. Each vial contains >5 x 105 cells in 1 ml volume. REK-n are characterized by immunofluorescent method with antibodies to cytokeratine-18 and -19. REK-n are negative for mycoplasma, bacteria, yeast and fungi. REK-n are guaranteed to further expand for 15 population doublings in the condition provided by ScienCell Research Laboratories.

Recommended Medium

It is recommended to use Keratinocyte Medium (KM, Cat. No. 2101) for the culturing of REK-n in vitro.

Product Use

REK-n are for research use only. It is not approved for human or animal use, or for application in in vitro diagnostic procedures.

Storage

Directly and immediately transfer cells from dry ice to liquid nitrogen upon receiving and keep the cells in liquid nitrogen until cell culture needed for experiments.

Shipping
 

Dry ice.

Reference
 

[1] Eckert, R. L., Efimova, T., Dashti, S. R., Balasubramanian, S., Deucher, A., Crish, J. F., Sturniolo, M. and Bone, F. (2002) Keratinocyte survival, differentiation, and death: many roads lead to mitogen-activated protein kinase. J Investig Dermatol Symp Proc 7(1):36-40.
[2] Song, P. I., Park, Y. M., Abraham, T., Harten, B., Zivony, A., Neparidze, N., Armstrong, C. A. and Ansel, J. C. (2002) Human keratinocytes express functional CD14 and toll-like receptor 4. J Invest Dermatol 119(2):424-32.
[3] de Panfilis, G., Semenza, D., Lavazza, A., Mulder, A. A., Mommaas, A. M. and Pasolini, G. (2002) Keratinocytes constitutively express the CD95 ligand molecule on the plasma membrane: an in situ immunoelectron microscopy study on ultracryosections of normal human skin. Br J Dermatol. 147(1):7-12.
推荐使用培养基(KM, Cat. No. 2101)