Cell proliferation in human tumour xenografts: measurement using antibody labelling against bromodeoxyuridine and Ki-67.

Abstract:

:Cell proliferation was investigated in human tumour xenografts using bromodeoxyuridine (BrdUrd) labelling, evaluated either by flow cytometry or in tissue sections, and also using the proliferation marker Ki-67. BrdUrd labelling was found to increase when cryostat tumour sections were digested with an enzymic solution. This yielded a labelling index up to four times higher than that obtained using the flow cytometer. Ki-67 indices were found to be higher than those reported for human tumour biopsies, as may be expected due to the enhanced growth rate of the xenografts. Significant heterogeneity was observed in the results for cervix, breast and bladder tumours, and the results of the three methods were poorly correlated. However, three of the four tumour types showed that the tumour with the lowest Ki-67 index also had the longest potential doubling time. Since the measurement of Ki-67 index was found technically easier to perform, and also adequately reflects relative tumour cell proliferation, it is preferred over the other techniques.

journal_name

Cell Prolif

journal_title

Cell proliferation

authors

Parkins CS,Bush C,Price P,Steel GG

doi

10.1111/j.1365-2184.1991.tb01147.x

subject

Has Abstract

pub_date

1991-03-01 00:00:00

pages

171-9

issue

2

eissn

0960-7722

issn

1365-2184

journal_volume

24

pub_type

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