Triple cascade nanocatalyst with laser-activatable O2 supply and photothermal enhancement for effective catalytic therapy against hypoxic tumor

Biomaterials ◽  
2022 ◽  
Vol 280 ◽  
pp. 121308
Author(s):  
Hua Yu ◽  
Yue Cheng ◽  
Cong Wen ◽  
Yi-Qing Sun ◽  
Xue-Bo Yin
Keyword(s):  
Diabetes ◽  
1990 ◽  
Vol 39 (8) ◽  
pp. 938-941 ◽  
Author(s):  
E. Chantelau ◽  
X. Y. Ma ◽  
S. Herrnberger ◽  
C. Dohmen ◽  
P. Trappe ◽  
...  

2021 ◽  
pp. 2002207
Author(s):  
Chunyu Huang ◽  
Fu‐Bing Wang ◽  
Lei Liu ◽  
Wei Jiang ◽  
Wei Liu ◽  
...  
Keyword(s):  

2021 ◽  
Vol 57 (34) ◽  
pp. 4134-4137
Author(s):  
Rongrong Zheng‡ ◽  
Xiayun Chen‡ ◽  
Linping Zhao ◽  
Ni Yang ◽  
Runtian Guan ◽  
...  

A porphysome-based photodynamic O2 economizer is developed to inhibit mitochondrial respiration for enhanced photodynamic therapy against hypoxic tumors.


Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1642
Author(s):  
Claudia Curcio ◽  
Silvia Brugiapaglia ◽  
Sara Bulfamante ◽  
Laura Follia ◽  
Paola Cappello ◽  
...  

Pancreatic ductal adenocarcinoma (PDA) is one of the most lethal forms of human cancer, characterized by unrestrained progression, invasiveness and treatment resistance. To date, there are limited curative options, with surgical resection as the only effective strategy, hence the urgent need to discover novel therapies. A platform of onco-immunology targets is represented by molecules that play a role in the reprogrammed cellular metabolism as one hallmark of cancer. Due to the hypoxic tumor microenvironment (TME), PDA cells display an altered glucose metabolism—resulting in its increased uptake—and a higher glycolytic rate, which leads to lactate accumulation and them acting as fuel for cancer cells. The consequent acidification of the TME results in immunosuppression, which impairs the antitumor immunity. This review analyzes the genetic background and the emerging glycolytic enzymes that are involved in tumor progression, development and metastasis, and how this represents feasible therapeutic targets to counteract PDA. In particular, as the overexpressed or mutated glycolytic enzymes stimulate both humoral and cellular immune responses, we will discuss their possible exploitation as immunological targets in anti-PDA therapeutic strategies.


2021 ◽  
pp. 2100601
Author(s):  
Chongchong Wang ◽  
Yanqing Li ◽  
Weijie Yang ◽  
Lin Zhou ◽  
Shaohua Wei

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Wenyu Gu ◽  
Linjing Gong ◽  
Xu Wu ◽  
Xudong Yao

AbstractHypoxic tumor-associated macrophages (TAMs) are related to poor prognosis of patients with clear cell renal cell carcinoma (ccRCC). Exosomes are small lipid-bilayer vesicles that implicated in tumor progression and metastasis. However, whether hypoxic TAM-derived exosomes affect RCC progression within the hypoxic tumor microenvironment has not been elucidated. GSE analysis identified miR-155-5p was upregulated in RCC. Moreover, we quantified levels of miR-155-5p using RT-qPCR, performed immunohistochemical staining in 79 pairs of primary RCC specimens and related them to clinicopathological parameters. Higher miR-155-5p levels were related to more CD163 + TAM infiltration and elevated HIF-1a expression in our cohort. In the in vitro studies, we initially purified and characterized the exosomes from the supernatant of TAMs subjected to normoxia or hypoxia, and then transfected antagomiR-155-5p or control into these TAMs to produce corresponding exosomes. Gain and loss-of-function studies further investigated the effect of transferred hypoxic exosomal miR-155-5p on the cross-talk between TAMs and RCC cells in xenograft model and in vitro co-culture experiments. The results of RNA immunoprecipitation analyses elucidated that miR-155-5p could directly interact with human antigen R (HuR), thus increasing IGF1R mRNA stability. Mechanistically, hypoxic TAM-Exo transferred miR-155-5p promoted RCC progression partially through activating IGF1R/PI3K/AKT cascades. Taken together, transfer of miR-155-5p from hypoxic TAMs by exosomes to renal cancer cells explains the oncogenic manner, in which M2 macrophages confer the malignant phenotype to RCC cells by enhancing HuR-mediated mRNA stability of IGF1R.


Author(s):  
Jiansheng Liu ◽  
Xueqin Qing ◽  
Qin Zhang ◽  
Ningyue Yu ◽  
Mengbin Ding ◽  
...  

Photodynamic therapy (PDT) has provided a promising approach for treatment of solid tumors, while the therapeutic efficacy is often limited due to hypoxic tumor microenvironment, resulting in tumor metastasis. We...


Author(s):  
Pierre Sonveaux ◽  
Frédérique Végran ◽  
Thies Schroeder ◽  
Melanie C. Wergin ◽  
Julien Verrax ◽  
...  
Keyword(s):  

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