{"title":"Thermoelectric catalysis overcomes tumour “marginalization” of cytotoxic T-lymphocytes to boost immune checkpoint blockade therapy","authors":"","doi":"10.1016/j.nantod.2024.102500","DOIUrl":null,"url":null,"abstract":"<div><p>Although immune checkpoint blockade (ICB) therapy enhances the tumour recognition of cytotoxic T lymphocytes (CTLs), the limited infiltration of CTLs into the centre of solid tumours significantly restricts the effect of ICB therapy. Herein, we showed that increased tumour interstitial fluid pressure (TIFP) is a critical factor in the tumour “marginalization” of CTLs. Additionally, we utilized a spatiotemporally controllable thermoelectric catalytic nanodrug (BF@M) to decompose water from the tumour interstitial fluid into oxygen, effectively reducing the TIFP and leading to enhanced infiltration of CTLs from the periphery to the interior of the solid tumour. The results revealed that BF@M significantly increased the intratumor infiltration of CTLs in three different tumour-bearing mouse models, with a maximum increase of 18.1 times. Overall, this study highlighted the intrinsic relationship between TIFP and CTLs infiltration and the mechanism underlying the effect of the TIFP, successfully addressing the tumour “marginalization” of CTLs to enhance ICB therapy.</p></div>","PeriodicalId":395,"journal":{"name":"Nano Today","volume":null,"pages":null},"PeriodicalIF":13.2000,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Today","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1748013224003566","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Although immune checkpoint blockade (ICB) therapy enhances the tumour recognition of cytotoxic T lymphocytes (CTLs), the limited infiltration of CTLs into the centre of solid tumours significantly restricts the effect of ICB therapy. Herein, we showed that increased tumour interstitial fluid pressure (TIFP) is a critical factor in the tumour “marginalization” of CTLs. Additionally, we utilized a spatiotemporally controllable thermoelectric catalytic nanodrug (BF@M) to decompose water from the tumour interstitial fluid into oxygen, effectively reducing the TIFP and leading to enhanced infiltration of CTLs from the periphery to the interior of the solid tumour. The results revealed that BF@M significantly increased the intratumor infiltration of CTLs in three different tumour-bearing mouse models, with a maximum increase of 18.1 times. Overall, this study highlighted the intrinsic relationship between TIFP and CTLs infiltration and the mechanism underlying the effect of the TIFP, successfully addressing the tumour “marginalization” of CTLs to enhance ICB therapy.
期刊介绍:
Nano Today is a journal dedicated to publishing influential and innovative work in the field of nanoscience and technology. It covers a wide range of subject areas including biomaterials, materials chemistry, materials science, chemistry, bioengineering, biochemistry, genetics and molecular biology, engineering, and nanotechnology. The journal considers articles that inform readers about the latest research, breakthroughs, and topical issues in these fields. It provides comprehensive coverage through a mixture of peer-reviewed articles, research news, and information on key developments. Nano Today is abstracted and indexed in Science Citation Index, Ei Compendex, Embase, Scopus, and INSPEC.