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- 积分
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- 威望
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- 包包
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1、There is considerable evidence that several diverse cancers, both leukae-
3 x. ?% J+ n0 J" d% imias and solid tumours, are hierarchically organized and sustained 7 n( p& x( {" r# B1 ?
by a subpopulation of self-renewing cells that can generate the full
* P( g1 {- _2 Z6 A# c' s- Jrepertoire of tumour cells (both tumorigenic and non-tumorigenic ) ]2 ^& I. M& D/ Z8 k
cells)9 Z, U6 O6 [7 F. i4 n
2、expression profiles、intertumoral heterogeneity、 oncogene addiction、
. j4 s6 j& |+ O8 Z! Qsurvival roles、 committed progenitor cells是什么意思?
T5 n$ \3 w: Y! V# l9 u3、Interestingly, despite " L! }6 a7 b+ U" H, d G. Q
the heterogeneous nature of tumours, the histopathology and gene-! n$ a. D( B) h4 v$ Z
expression profiles of tumours arising in patients often remain relatively
( e" d+ X& o: B+ a# a$ F5 l9 astable during progression from localized disease to metastatic and even
( J6 a3 D! T |. p% J* {end-stage disease3
# H3 u4 G3 }8 w& k4、transgenic mouse models have shown
' v# k0 f: D2 Z( j: z2 a2 v! }! jthat mutant Hras targeted to the hair follicle region highly predisposed ; D( J0 L3 Z7 y7 p: |2 \
mice to squamous carcinomas, whereas its targeting to more differ-, T$ ?- W$ v* V- G, v# L7 E
entiated interfollicular or suprabasal cells resulted in papillomas with
- f# Y) O$ J1 w! glow malignant potential。Moreover, transformation of distinct breast
/ g9 h0 V5 \1 B- k' k; u: M, nepithelial cells in vitro has indicated that the target cell is an important ( t- P. h0 P8 C) `; x+ z b# }
determinant of tumour phenotype9 K% C, g/ k3 v& q8 F7 b
5、Nevertheless,
* i4 @0 e) T& T' Fany cell in the hierarchy with proliferative capacity could serve as a cell 8 c: I7 ` z p2 B6 V
of origin in cancer, if it acquires mutations that re-instigate self-renewal
0 J2 `* t! q6 k& P! ncapacity and prevent differentiation to a post-mitotic state
7 E2 g* U T W' P# A& n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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