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Tu Xuan-Lin
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Li Ling
PROGRESS IN
CANCER
CONTROL
Natural cellular components
like
interleukin-2, interferon,
tumour
necrosis factor,etc., are very important
biological response modifiers which can
kill cancer cells or mark the cancer cell
surlace to be targeted for other cancer
control "bullets",
including
chemotheraphy
and
gene manipulation.
Chemontherapy
is
the
use
of
cell
toxins
to
kill cancer cells
in
the
body.
Its
action is non-specific; hair and
the
digestive
tract are also
affected.
Tumour
cell
resistance
is
also
a
major
concern.
Gene
therapy
may be
directed
to
the oncogene
(for)
or
the
anti-
oncogene (against) afiecting cancer
cell
development,
e.g.
many rectal
and
pancreatic cancers
are
promoted
by
the
ras-oncogene and
RNA
transferase and
disabling the latter
may
be
beneficial.
Many
cancers
harbour
a
defective
P.53:
an
anti-oncogene.
Specific destruction
of
the defective
P.53 causing death
of
cancer cells is already feasible
in
animals.
Embolisation
causing
blockage of
the
tumour
arterial
supply
is
feasible.
As oxygen deficient cells
seem
to
be
more prone
to
cancer
formation, there
is
a
theoretical
advantage of optimizing tissue
orygen
supply to prevent cancer development.
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