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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Clin+Transl+Immunology
2017 ; 6
(10
): e160
Nephropedia Template TP
gab.com Text
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English Wikipedia
Adoptive cell therapy with CD4(+) T helper 1 cells and CD8(+) cytotoxic T cells
enhances complete rejection of an established tumour, leading to generation of
endogenous memory responses to non-targeted tumour epitopes
#MMPMID29114389
Li K
; Donaldson B
; Young V
; Ward V
; Jackson C
; Baird M
; Young S
Clin Transl Immunology
2017[Oct]; 6
(10
): e160
PMID29114389
show ga
The results of adoptive T-cell therapies (ACTs) are very encouraging and show
clinical evidence that ACT can provide a cure for patients with metastatic
disease. However, various response rates and long-term cancer remission have been
observed in different ACT trials. The types of T cells, prior treatment with
chemotherapy and co-administration of other immune-target therapies have been
found to influence the efficacy of ACT. In this study, we investigate the ability
of ACT using CD4(+) T helper 1 (Th1) cells and CD8(+) cytotoxic T lymphocytes
(CTLs) to reject the growth of established B16-ovalbumin (OVA) melanoma. CD8(+)
CTLs were found to be the main effector T cells that mediated tumour regression.
However, low tumour-free survival rates were observed in ACT with CD8(+) CTLs
only. Co-transferring CD4(+) Th1 cells and CD8(+) CTLs has been observed to
induce a synergistic antitumour response, resulting in complete regression in 80%
of the tumour-bearing mice. We also examined a prior Dacarbazine (DTIC) and after
virus-like particle (VLP)-OVA vaccine treatment to enhance ACT, but no
therapeutic benefit was observed during primary B16-OVA tumour growth.
Nevertheless, the ACT-mediated antitumour response was able to generate memory
responses to both B16-OVA and B16-gp33 tumours. VLP-OVA vaccination following ACT
enhances the memory responses to tumours that express a heterogenic population of
both B16-OVA and B16-gp33 cells; however, it abolished the memory response to
tumours consisting of only gp33-expressing cells. These findings provide
important information for designing therapeutic treatments for patients with
metastatic disease and cancer relapse to achieve durable cancer remission.