蛋白酶Cathepsin K可以解锁癌症的葡萄糖
Angel Kuo1, Gabrielle S Tender1, William D Chow1
1Department of Chemistry and Sarafan ChEM-H, Stanford University, Stanford, CA, USA.
The Journal of biological chemistry
|January 25, 2026
概括
甲素K (CTSK) 独特地降解了癌细胞表面的糖合物,减少了糖的厚度. 这一发现证实了CTSK作为癌症治疗的潜在治疗酶.
科学领域:
- 生物化学 生物化学
- 在瘤学瘤学.
- 葡萄糖生物学 葡萄糖生物学
背景情况:
- 癌症葡萄糖,以结和硬化的葡萄糖结合物 (如粘膜) 为特征,促进瘤的存活和转移.
- 以前使用细菌粘酶的治疗策略显示出有前途,但存在局限性,包括免疫性和有限的目标范围.
研究的目的:
- 确定一种能够降解多种癌症酶的人类酶.
- 评估人类甲素作为治疗癌症的治疗剂的潜力.
主要方法:
- 对所有15种人类甲素进行查,以检测它们的粘素降解活性.
- 评估已识别的 cathepsins 降解净化和细胞表面的粘膜,蛋白质糖和多聚焦糖蛋白的能力.
- 测量了 cathepsin K 对整体葡萄糖体厚度的影响.
主要成果:
- 卡塞普辛K (CTSK) 被确定为独特的人类卡塞普辛,可降解细胞表面的粘膜,蛋白质糖和多聚化糖蛋白.
- CTSK治疗显著降低了癌症葡萄糖的总厚度.
- 与之前的细菌粘酶相比,CTSK表现出更广泛的降解能力.
结论:
- 甲素K是一种有前途的候选酶,用于开发针对糖核体重塑的新型癌症疗法.
- CTSK提供了一种潜在的解决方案,以克服细菌粘酶的局限性,包括降低免疫性和更广泛的目标降解.
相关概念视频
Glycocalyx and its Functions
8.3K
The glycocalyx is a carbohydrate-rich, fuzzy-appearing layer on the outer surface of the cell membrane. It is highly hydrophilic, because of this it attracts large amounts of water to the cell's surface. This aids the cell's interaction with the watery environment and also helps it to obtain substances dissolved in the water. It is also important for cell identification, self/non-self determination, and embryonic development and is used in cell-to-cell attachments to form tissues.
8.3K
Cancer
53.9K
Cancers arise due to mutations in genes involved in the regulation of cell division, which leads to unrestricted cell proliferation. Modern science and medicine have made great strides in the understanding and treatment of cancer, including eradicating cancer in some patients. However, there is still no cure for cancer. This is largely due to the fact that cancer is a large group of many diseases.
53.9K
What is Cancer?
14.1K
Cells and tissues must meticulously coordinate their activities for the normal functioning of the human body. Therefore, they exhibit socially responsible behavior - resting, growing, dividing, differentiating, or dying - for the organism’s benefit. Cancer arises when cells divide uncontrollably and invade other tissues or organs.
Although people have known about cancer for centuries, it was only in 1761 that Giovanni Morgagni of Padua performed a detailed autopsy of...
Although people have known about cancer for centuries, it was only in 1761 that Giovanni Morgagni of Padua performed a detailed autopsy of...
14.1K
Cancer Prevention
7.7K
Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
Some...
7.7K
Cancer Therapies
9.9K
Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
However, cancer treatments can pose several challenges, as therapies used to kill cancer cells are generally also toxic to normal cells. Moreover, cancer cells mutate rapidly and can develop resistance to chemical agents or radiation therapy. Besides, all types of cancer cells may not respond to the same therapy. Some cancer cells respond to one...
9.9K
Cancer Vaccines
990
Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...
990


