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- 积分
- 881
- 威望
- 881
- 包包
- 5504
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1、There is considerable evidence that several diverse cancers, both leukae-$ q# `8 U, A# x8 G+ \3 Z) F+ R2 P- H
mias and solid tumours, are hierarchically organized and sustained
% h& V- j. j$ ^5 [by a subpopulation of self-renewing cells that can generate the full
$ [$ e: j ~0 J9 ?; K0 f( X/ q+ Prepertoire of tumour cells (both tumorigenic and non-tumorigenic
, f8 ]- i9 o. H, ocells)
$ \4 V5 y* `4 A9 ^0 @+ }2、expression profiles、intertumoral heterogeneity、 oncogene addiction、
1 {9 j$ \: M( f; L) Ysurvival roles、 committed progenitor cells是什么意思?
7 C% m" c; ?3 r3 a/ D3、Interestingly, despite 7 v: B1 f, F4 @: i
the heterogeneous nature of tumours, the histopathology and gene-. u+ ~1 A( ]0 b' |1 ^! H0 f
expression profiles of tumours arising in patients often remain relatively
( V: J0 }6 F1 B( x# Z p5 qstable during progression from localized disease to metastatic and even
" T& h, f# M) L' L& m2 K4 zend-stage disease3
: L% H! t9 h$ j6 |3 }( k* k4、transgenic mouse models have shown
) L6 y( |' K4 h. C2 jthat mutant Hras targeted to the hair follicle region highly predisposed ) J5 O8 U7 e( o
mice to squamous carcinomas, whereas its targeting to more differ-
$ d/ S; V+ l# q# e* t9 Centiated interfollicular or suprabasal cells resulted in papillomas with
# }* e# C# u7 j u* O* `$ \low malignant potential。Moreover, transformation of distinct breast 3 ?* q3 x+ @3 y: A
epithelial cells in vitro has indicated that the target cell is an important
; Z5 q. G9 \& x0 Q8 [) r8 }determinant of tumour phenotype
+ S3 ]# c1 U) U% G$ T) T5、Nevertheless,
, {, ?) V) h- Q( S3 jany cell in the hierarchy with proliferative capacity could serve as a cell 8 n9 @; W) Z% _% W$ H7 `
of origin in cancer, if it acquires mutations that re-instigate self-renewal
: D5 ^, C" C z. t) _capacity and prevent differentiation to a post-mitotic state
) _: m3 j5 _2 t有点多哈~~非常非常感谢~有些感觉上下读起来根本不连贯。云云雾雾的! |
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