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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 PLoS+One
2017 ; 12
(4
): e0175540
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Neem leaf glycoprotein prevents post-surgical sarcoma recurrence in Swiss mice by
differentially regulating cytotoxic T and myeloid-derived suppressor cells
#MMPMID28414726
Sarkar M
; Ghosh S
; Bhuniya A
; Ghosh T
; Guha I
; Barik S
; Biswas J
; Bose A
; Baral R
PLoS One
2017[]; 12
(4
): e0175540
PMID28414726
show ga
Post-surgical tumor recurrence is a common problem in cancer treatment. In the
present study, the role of neem leaf glycoprotein (NLGP), a novel
immunomodulator, in prevention of post-surgical recurrence of solid sarcoma was
examined. Data suggest that NLGP prevents tumor recurrence after surgical removal
of sarcoma in Swiss mice and increases their tumor-free survival time. In
NLGP-treated tumor-free mice, increased cytotoxic CD8+ T cells and a decreased
population of suppressor cells, especially myeloid-derived suppressor cells
(MDSCs) was observed. NLGP-treated CD8+ T cells showed greater cytotoxicity
towards tumor-derived MDSCs and supernatants from the same CD8+ T cell culture
caused upregulation of FasR and downregulation of cFLIP in MDSCs. To elucidate
the role of CD8+ T cells, specifically in association with the downregulation in
MDSCs, CD8+ T cells were depleted in vivo before NLGP immunization in surgically
tumor removed mice and tumor recurrence was noted. These mice also exhibited
increased MDSCs along with decreased levels of Caspase 3, Caspase 8 and increased
cFLIP expression. In conclusion, it can be stated that NLGP, by activating CD8+ T
cells, down regulates the proportion of MDSCs. Accordingly, suppressive effects
of MDSCs on CD8+ T cells are minimized and optimum immune surveillance in tumor
hosts is maintained to eliminate the residual tumor mass appearing during
recurrence.