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1992 ; 83
(9
): 1002-10
Nephropedia Template TP
gab.com Text
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Twit Text #
English Wikipedia
Pulmonary large cell carcinoma expressing neuroendocrine markers: the
morphological, biological, and neuroendocrine features of their cell lines and
surgical cases
#MMPMID1331003
Kasai K
; Kameya T
; Kawakubo Y
; Sato Y
; Wada C
; Itoh H
Jpn J Cancer Res
1992[Sep]; 83
(9
): 1002-10
PMID1331003
show ga
A cell line expressing neuroendocrine (NE) markers, designated as KTS9, was
established from a human large cell carcinoma of the lung using serum-free
medium, ACL-3. KTS9 cells showed morphological characteristics of large cell
undifferentiated carcinoma (LCUC) and expressed some general NE markers including
neuron-specific enolase (NSE), protein gene product (PGP) 9.5, neural cell
adhesion molecule (N-CAM), synaptophysin and neurofilaments (NF) of 200 kd. Some
cells of this cell line were positive to chromogranin-A (CG-A), but did not
express Leu7 or aromatic L-amino acid decarboxylase (AADC). Such a cell line
derived from LCUC with NE properties has not previously been reported. The
biological and NE properties of the KTS9 cell line were compared with those of 2
surgical cases of LCUC with NE markers and of the KTA7 cell line previously
reported to derive from large cell carcinoma and to possess NE markers such as
alpha-hCG, PGP9.5 N-CAM and AADC. Tumor cells of 2 large cell carcinomas
expressed NSE, PGP9.5, N-CAM and NF. The KTS9 and KTA7 cell lines and 2 large
cell carcinomas were thus considered to be LCUCs with NE differentiation. Both
lines had the morphological characteristics of LCUC, relatively short doubling
time and discordant expression of NE markers, indicating them to be closely
related to the variant type of small cell carcinoma cell lines and thus possibly
to represent high-grade malignancy. They may be useful for examining the
biological behavior and NE features of large cell-type NE tumors of the lung.