scholarly journals Therapeutic tumor vaccines — a rising star to benefit cancer patients

2021 ◽  
Vol 2 (3) ◽  
pp. 25-41
Author(s):  
Qian Wei ◽  
Zhao-Yuan Fang ◽  
Zi-Meng Zhang ◽  
Teng-Fei Zhang
2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Chaoming Mao ◽  
Xiao Mou ◽  
Yuepeng Zhou ◽  
Guoyue Yuan ◽  
Chengcheng Xu ◽  
...  

HumanγδT cells display the principal characteristics of professional antigen-presenting cells (APCs), in addition to playing a vital role in immunity through cytokine secretion and their cytotoxic activity. However, it is not clear whetherγδT cells perform APC-like functions under pathological conditions. In this study, we showed that, in contrast to peripheral-derivedγδT cells directly isolated from PBMCs of gastric cancer patients, tumor-activatedγδT cells not only killed tumor cells efficiently but also strongly induced primary CD4+and CD8+  αβT cells proliferation and differentiation. More importantly, they abrogated the immunosuppression induced by CD4+CD25+Treg cells and induced the cytotoxic function of CD8+  αβT cells from patients with gastric cancer. In conclusion, tumor-activatedγδT cells can induce adaptive immune responses through their APC-like functions, and these cells may be a potentially useful tool in the development of tumor vaccines and immunotherapy.


Cancers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 1909 ◽  
Author(s):  
Jie Chen ◽  
Hui Liu ◽  
Tiffany Jehng ◽  
Yanqing Li ◽  
Zhoushi Chen ◽  
...  

Dendritic cells (DCs) are potent antigen-presenting cells that play a critical role in activating cellular and humoral immune responses. DC-based tumor vaccines targeting tumor-associated antigens (TAAs) have been extensively tested and demonstrated to be safe and potent in inducing anti-TAA immune responses in cancer patients. Sipuleucel-T (Provenge), a cancer vaccine of autologous DCs loaded with TAA, was approved by the United States Food and Drug Administration (FDA) for the treatment of castration-resistant prostate cancer. Sipuleucel-T prolongs patient survival, but has little or no effect on clinical disease progression or biomarker kinetics. Due to the overall limited clinical efficacy of tumor vaccines, there is a need to enhance their potency. PD-L1 is a key immune checkpoint molecule and is frequently overexpressed on tumor cells to evade antitumor immune destruction. Repeated administrations of PD-L1 or PD-1 antibodies have induced sustained tumor regression in a fraction of cancer patients. In this study, we tested whether vaccinations with DCs, loaded with a PD-L1 immunogen (PDL1-Vax), are able to induce anti-PD-L1 immune responses. We found that DCs loaded with PDL1-Vax induced anti-PD-L1 antibody and T cell responses in immunized mice and that PD-L1-specific CTLs had cytolytic activities against PD-L1+ tumor cells. We demonstrated that vaccination with PDL1-Vax DCs potently inhibited the growth of PD-L1+ tumor cells. In summary, this study demonstrates for the first time the principle and feasibility of DC vaccination (PDL1-Vax) to actively induce anti-PD-L1 antibody and T cell responses capable of inhibiting PD-L1+ tumor growth. This novel anti-PD-L1 vaccination strategy could be used for cancer treatment and prevention.


2003 ◽  
Vol 22 (3-4) ◽  
pp. 283-319 ◽  
Author(s):  
EDWIN B. WALKER ◽  
MARY L. (NORA) DISIS

2021 ◽  
Vol 160 (1) ◽  
pp. 234-243
Author(s):  
Diana Samoil ◽  
Nazek Abdelmutti ◽  
Lisa Ould Gallagher ◽  
Nazlin Jivraj ◽  
Naa Kwarley Quartey ◽  
...  

2007 ◽  
Vol 177 (4S) ◽  
pp. 297-297
Author(s):  
Kristina Schwamborn ◽  
Rene Krieg ◽  
Ruth Knüchel-Clarke ◽  
Joachim Grosse ◽  
Gerhard Jakse

2007 ◽  
Vol 177 (4S) ◽  
pp. 130-130
Author(s):  
Markus Graefen ◽  
Jochen Walz ◽  
Andrea Gallina ◽  
Felix K.-H. Chun ◽  
Alwyn M. Reuther ◽  
...  

2007 ◽  
Vol 177 (4S) ◽  
pp. 200-200 ◽  
Author(s):  
Andrea Gallina ◽  
Pierre I. Karakiewicz ◽  
Jochen Walz ◽  
Claudio Jeldres ◽  
Quoc-Dien Trinh ◽  
...  

2007 ◽  
Vol 177 (4S) ◽  
pp. 97-97
Author(s):  
Ravishankar Jayavedappa ◽  
Sumedha Chhatre ◽  
Richard Whittington ◽  
Alan J. Wein ◽  
S. Bruce Malkowicz

Sign in / Sign up

Export Citation Format

Share Document