MCP-2/CCL8 蛋白, Human (HEK293, His)

MCP-2/CCL8 Protein, Human (HEK293, His) is a CC chemokine that interacts with CCR1, CCR2B, CCR3, and CCR5 to mediate host inflammatory immune responses, tumorigenesis, and antiviral infections. MCP-2/CCL8 Protein, Human (HEK293, His ) is a recombinant human MCP-2/CCL8 (Q24-P99) protein expressed by HEK293 with a his tag^[1][2].

CCL8，也称为单核细胞趋化蛋白 2 (MCP2)，是属于 CC 趋化因子家族的小细胞因子。它首先在人骨肉瘤细胞中发现，是由位于人17号染色体上的CCL8基因编码的蛋白质。CCL8主要在小肠和外周血细胞中表达。CCL8 可以结合多种不同的趋化因子细胞表面受体，例如 CCR1、CCR2B、CCR3 和 CCR5。CCL8可以充当化学引诱剂，吸引单核细胞、淋巴细胞、嗜碱性粒细胞和嗜酸性粒细胞等趋化因子来介导炎症宿主反应。一方面，CCL8有助于乳腺癌的扩散，促进食管鳞癌的迁移和侵袭。另一方面，也有报道称CCL8抑制宫颈癌肿瘤生长，并在黑色素瘤中表现出抗肿瘤转移作用。cCL8 显着激活胶质母细胞瘤细胞中的 ERK1/2 磷酸化，并通过中和 tama 分泌的 CCL8 的抗体阻断来显着降低胶质瘤细胞的侵袭性。同时，CCL8 可以作为一种有效的 HIV1 抑制剂，对受体 CCR5 具有高亲和力，CCR5 是 HIV1 的主要共同受体之一^[1][2]。

MCP2/CCL8 (100 ng/mL, 48 h) can induce Epithelial-Mesenchymal Transition (EMT) by activation NF-κB signal pathway in human ESCC cell line Eca109 and promote migration and invasion of ESCC cells^[3].

Human

HEK293

C-6*His

P80075 (Q24-P99)

6355  [NCBI]

QPDSVSIPITCCFNVINRKIPIQRLESYTRITNIQCPKEAVIFKTKRGKEVCADPKERWVRDSMKHLDQIFQNLKPHHHHHH

Approximately 13 kDa

Greater than 95% as determined by reducing SDS-PAGE.

无菌粉末.

Lyophilized after extensive dialysis against 20 mM PB,150 mM NaCl, 1 mM EDTA, pH 7.4.

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.

• [1]. Xiang Zhang, et al. CCL8 secreted by tumor-associated macrophages promotes invasion and stemness of glioblastoma cells via ERK1/2 signaling. Lab Invest. 2020 Apr;100(4):619-629.  [Content Brief]

  [2]. Jan Korbecki, et al. CC Chemokines in a Tumor: A Review of Pro-Cancer and Anti-Cancer Properties of the Ligands of Receptors CCR1, CCR2, CCR3, and CCR4. Int J Mol Sci. 2020 Nov 9;21(21):8412.  [Content Brief]

  [3]. Jian Zhou, et al. MCP2 activates NF-κB signaling pathway promoting the migration and invasion of ESCC cells. Cell Biol Int. 2018 Mar;42(3):365-372.  [Content Brief]