The
ultimate cancer immunotherapy agent should be capable to differentiate between
cancer and normal cells like specificity, be effective sufficient to kill small
or large numbers of tumor cells like sensitivity, and lastly be competent to
prevent recurrence of the tumor like durability. Currently, tumor immunology and
immune based therapy is one of the most exciting and rapidly growing fields.
The
immune system is generally divided into two primary components such as the
innate immune response or system, and the extremely precise but more gradually
developing adaptive or acquired immune response or system. Innate immunity is
rapidly acting but typically not very specific and includes physicochemical
barriers (eg, skin and mucosa), blood proteins such as complement, phagocytic
cells (such as neutrophils, macrophages, dendritic cells, and natural killer cells),
and cytokines, which synchronize and regulate the cells involved in innate
immunity. Adaptive immunity is thought of as the acquired arm of immunity,
which allows for exquisite specificity, an ability to remember the previous
existence of the pathogen and differentiate self from non-self and,
significantly, the ability to respond more vigorously on repeat exposure to the
pathogen.
The
thought that the immune system may actively prevent the development of neoplasia
is termed as cancer immunosurveillance. There are several nonspecific tumor
immune based therapy approaches ranging from biological response modifiers
(BRM) to recombinant cytokines.
Biological
response modifiers are molecules that can modify the biological response of
cells to changes in its external environment, which in the perspective of
cancer immune based therapy, might easily extent specific and non specific immune
based therapies.
A
number of investigations using recombinant cytokines, growth factors, or
hormones in various fashions for human and veterinary cancer patients have been
reported up to now. Many have investigated the in vitro and/or in vivo effects
of the soluble cytokine (for example interferons, IL 2, IL 12, IL 15 and
liposome encapsulation of the cytokine (for example liposomal IL 2) or use a
virus, cell, plasmid, liposome DNA complex, or other mechanism to express the
cytokine (such as recombinant poxvirus expressing IL 2).
Similar
to any type of anticancer treatment, immunotherapy appears to work best in a
minimal residual disease setting, signifying its most appropriate use will be
in an adjuvant setting with local tumor therapies such as surgery or radiation
therapy.
Global
Allied Pharmaceuticals (GAP) consist an expert team of oncologists and
researchers. To know more information about immunotherapy related services, you
can contact on www.gapsos.com.
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