CDK4(细胞周期蛋白依赖性激酶4)属于细胞周期蛋白依赖性激酶(CDK)家族,该家族成员在调控细胞周期进程中起核心作用。CDK4与细胞周期蛋白D(Cyclin D)结合形成复合物,促进细胞从G1期进入S期,主要通过磷酸化视网膜母细胞瘤蛋白(Rb)使其失活,释放转录因子E2F,从而激活DNA复制相关基因的表达。CDK4的功能异常与多种疾病相关,尤其是癌症。例如,CDK4基因的扩增或突变可导致其过度激活,使细胞周期失控,促进肿瘤发生。在黑色素瘤、乳腺癌和胶质母细胞瘤中常见CDK4过表达或Cyclin D-CDK4通路异常。CDK4的某些突变(如R24C)会使其对抑制蛋白p16INK4a不敏感,导致持续激活。相反,CDK4表达降低或功能缺失可能导致细胞周期停滞,影响组织再生或发育。CDK家族成员(如CDK1、CDK2、CDK6等)均依赖与细胞周期蛋白结合发挥作用,但各自在细胞周期不同阶段起特异性调控作用。针对CDK4的抑制剂(如帕博西尼)已用于癌症治疗,通过阻断Rb磷酸化抑制肿瘤细胞增殖。此外,CDK4还与代谢调控、衰老等过程相关,其表达水平变化可能影响其他基因(如p21、p27)的活性或信号通路(如PI3K/AKT)的交叉调控。
The protein encoded by this gene is a member of the Ser/Thr protein kinase family. This protein is highly similar to the gene products of S. cerevisiae cdc28 and S. pombe cdc2. It is a catalytic subunit of the protein kinase complex that is important for cell cycle G1 phase progression. The activity of this kinase is restricted to the G1-S phase, which is controlled by the regulatory subunits D-type cyclins and CDK inhibitor p16(INK4a). This kinase was shown to be responsible for the phosphorylation of retinoblastoma gene product (Rb). Mutations in this gene as well as in its related proteins including D-type cyclins, p16(INK4a) and Rb were all found to be associated with tumorigenesis of a variety of cancers. Multiple polyadenylation sites of this gene have been reported. [provided by RefSeq, Jul 2008]
由该基因编码的蛋白质是丝氨酸/苏氨酸蛋白激酶家族的一个成员。该蛋白质是高度相似酿酒酵母CDC28和粟酒裂殖酵母CDC2的基因产物。它是蛋白激酶复合物是细胞周期G1期的进展重要的催化亚基。这种激酶的活性仅限于G1-S期,这是由该调节亚基D型细胞周期蛋白和CDK抑制剂p16基因(的INK4a)控制。这种激酶被证明是负责视网膜细胞瘤基因产物(RB)的磷酸化。均发现该基因,以及在其相关的蛋白质,包括D型细胞周期蛋白,p16基因(INK4A)和Rb突变与多种癌症的肿瘤发生有关。已经报道了这个基因的多聚腺苷酸化位点。 [由RefSeq的,2008年7月提供]
CDK4基因(以及对应的蛋白质)的细胞分布位置:
CDK4基因的本体(GO)信息:
名称 |
---|
4151 PI3K-Akt signaling pathway [PATH:hsa04151] |
4110 Cell cycle [PATH:hsa04110] |
4115 p53 signaling pathway [PATH:hsa04115] |
4530 Tight junction [PATH:hsa04530] |
4660 T cell receptor signaling pathway [PATH:hsa04660] |
5200 Pathways in cancer [PATH:hsa05200] |
5203 Viral carcinogenesis [PATH:hsa05203] |
5212 Pancreatic cancer [PATH:hsa05212] |
5214 Glioma [PATH:hsa05214] |
5220 Chronic myeloid leukemia [PATH:hsa05220] |
5218 Melanoma [PATH:hsa05218] |
5219 Bladder cancer [PATH:hsa05219] |
5222 Small cell lung cancer [PATH:hsa05222] |
5223 Non-small cell lung cancer [PATH:hsa05223] |
5166 HTLV-I infection [PATH:hsa05166] |
5162 Measles [PATH:hsa05162] |
5161 Hepatitis B [PATH:hsa05161] |
名称 |
---|
Cell Cycle |
Cell Cycle, Mitotic |
Cellular responses to stress |
Cellular Senescence |
Chromatin modifying enzymes |
Chromatin organization |
Cyclin D associated events in G1 |
Developmental Biology |
G1 Phase |
Meiosis |
Meiotic recombination |
Mitotic G1-G1/S phases |
Oncogene Induced Senescence |
Oxidative Stress Induced Senescence |
RMTs methylate histone arginines |
S Phase |
Senescence-Associated Secretory Phenotype (SASP) |
Transcriptional regulation of white adipocyte differentiation |
Ubiquitin-dependent degradation of Cyclin D |
Ubiquitin-dependent degradation of Cyclin D1 |
疾病名称 | 关系值 | NofPmids | NofSnps | 来源 |
MELANOMA, CUTANEOUS MALIGNANT, SUSCEPTIBILITY TO, 3 | 0.36 | 3 | 2 | CLINVAR_CTD_human_UNIPROT |
Mammary Neoplasms, Experimental | 0.2 | 3 | 0 | CTD_human_RGD |
Hereditary Melanoma | 0.124885954 | 18 | 1 | BeFree_CLINVAR |
Liposarcoma, Dedifferentiated | 0.12434307 | 16 | 0 | BeFree_ORPHANET |
liposarcoma | 0.122985861 | 13 | 0 | BeFree_CTD_human |
Brain Neoplasms | 0.122909916 | 4 | 0 | BeFree_CTD_human_GAD |
Animal Mammary Neoplasms | 0.122367032 | 3 | 0 | CTD_human_GAD |
Liposarcoma, well differentiated | 0.121357209 | 5 | 0 | BeFree_ORPHANET |
Stomach Neoplasms | 0.12 | 1 | 0 | CTD_human |
Neoplastic Syndromes, Hereditary | 0.12 | 0 | 1 | CLINVAR |
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