药理性LDH抑制重定向内葡萄糖吸收,并改善固体瘤模型中的抗瘤免疫力
Svena Verma1,2,3, Sadna Budhu1,2,3, Inna Serganova3,4
1Pharmacology Program.
The Journal of clinical investigation
|September 3, 2024
概括
乳酸脱酶抑制剂 (LDHi) 重新编程瘤微环境,使癌细胞饥饿,同时促进T细胞功能. 这种策略通过改善T细胞透和抗瘤免疫力来提高免疫疗法的有效性.
科学领域:
- 癌症生物学 癌症生物学
- 免疫学 免疫学 免疫学
- 代谢途径 代谢途径
背景情况:
- 瘤细胞表现出高的葡萄糖分解,这是一个对癌症进展至关重要的代谢标志.
- 免疫疗法的有效性与瘤乳酸脱酶 (LDH) 水平和瘤微环境 (TME) 中的葡萄糖可用性有关.
- 乳酸脱酶抑制剂 (LDHi) 显示出临床前前景,但它们对瘤透T细胞的直接影响需要进一步调查.
研究的目的:
- 调查LDHi对TME内的瘤细胞和T细胞代谢的影响.
- 为了确定LDHi是否可以增强T细胞功能并改善抗瘤免疫力.
- 评估将LDHi与免疫检查点阻塞疗法结合的疗效.
主要方法:
- 用LDHi对临床前癌症模型的治疗.
- 评估葡萄糖吸收,GLUT1表达和瘤细胞和T细胞中的增殖.
- 在体外分析T细胞功能和调节性T细胞 (Treg) 活动.
- 结合疗法研究涉及LDHi和免疫检查点阻塞.
主要成果:
- LDHi治疗减少了瘤细胞的葡萄糖吸收,GLUT1表达和增殖.
- LDHi治疗增加了葡萄糖吸收,GLUT1表达和瘤透T细胞的增殖.
- 通过LDHi增强葡萄糖的可用性改善了T细胞瘤杀伤功能和Treg免疫抑制功能受损.
- 结合LDHi和免疫检查点阻塞的联合治疗通过增强效应T细胞活性和破坏Tregs稳定,有效控制了瘤进展.
结论:
- 抑制LDH有效地重新平衡TME内的葡萄糖可用性,有利于T细胞功能.
- LDHi代表了增强T细胞介导抗瘤免疫力的有希望的策略.
- 将LDHi与免疫疗法结合起来,可以克服治疗耐药性并改善癌症的结果.
相关概念视频
Glucagon-like Receptor Agonists
306
Incretins include glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), which stimulate insulin secretion post-meals. In type 2 diabetes, GIP's efficacy is reduced, making GLP-1 a viable drug target. GIP originates from preproGIP.
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
306
Oral Hypoglycemic Agents: α-Glucosidase Inhibitors
167
α-glucosidase inhibitors, including acarbose (Precose), miglitol (Glyset), and voglibose (Voglib) (primarily available in Asia), are drugs that control blood sugar levels by delaying the digestion of starch and disaccharides. They achieve this by inhibiting α-glucosidase enzymes in the intestine, which slow the absorption of carbohydrates in the intestine, which in turn leads to a prolonged release of the glucoregulatory hormone GLP-1 from intestinal L-cells.
Acarbose and miglitol are...
Acarbose and miglitol are...
167
Targeted Cancer Therapies
7.5K
The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
There are several types of targeted therapies against...
There are several types of targeted therapies against...
7.5K
Dipeptidyl Peptidase 4 Inhibitors
178
Dipeptidyl peptidase 4 (DPP-4) is a serine protease widely distributed in the body. It's involved in the inactivation of GLP-1 and GIP hormones, which are crucial for insulin regulation. DPP-4 inhibitors, such as sitagliptin (Januvia), saxagliptin (Onglyza), linagliptin (Tradjenta), alogliptin (Nesina), and vildagliptin (Galvus), help increase the proportion of active GLP-1, enhancing insulin secretion. These inhibitors work by competitively binding to DPP-4. This binding causes a...
178
Tumor Immunotherapy
493
Immunotherapy is a treatment that boosts or manipulates the immune system to fight diseases, including cancer. For instance, by stimulating an immune response through vaccinations against viruses that cause cancers, like hepatitis B virus and human papillomavirus, these diseases can be prevented. Nonetheless, some cancer cells can avoid the immune system due to their rapid mutation and division. The immune response to many cancers involves three phases: elimination, equilibrium, and escape.
493
Oral Hypoglycemic Agents: Biguanides and Glitazones
183
Biguanides, particularly metformin (Glucophage), are insulin sensitizers that enhance glucose uptake, thereby reducing insulin resistance. Unlike sulfonylureas, metformin doesn't prompt insulin secretion, which helps to curb hypoglycemia risk. Metformin is beneficial in treating conditions like polycystic ovary syndrome due to its insulin-resistance reduction capability. The drug's primary action involves curtailing hepatic gluconeogenesis, a significant contributor to high blood...
183


