ProMetic's New MAbsorbent(R) Ligands Achieve Key Milestones
- Validation performed in collaboration with leading antibody
manufacturers
- New purification products targeted at $16 B monoclonal antibody
(MAbs) market
- Increased performance for manufacture of MAbs and antibody
fragments
MONTREAL, QUEBEC AND CAMBRIDGE, ENGLAND--(Marketwire - August 27,
2007) - ProMetic Life Sciences Inc. (TSX: PLI) ("ProMetic") announces
that its UK-based subsidiary, ProMetic BioSciences Ltd ("PBL"), has
achieved key performance milestones for its new MAbsorbent® ligands
targeted at the purification of monoclonal antibodies ("MAbs") and
recombinant antibody fragments ("Fabs"). The performance of
ProMetic's new ligands against set targets was validated in
collaboration with seven leading antibody producer companies in the
United States and Europe.
According to Dr. Steve Burton, PBL's Chief Executive Officer, "These
new ligands are of strategic importance as, for the first time, they
enable ProMetic to penetrate the monoclonal antibody purification
market and derive revenues from the strong and consistent growth in
demand for antibody therapeutics. With ligand development complete,
we are now progressing to manufacturing scale-up and preparations for
market launch by the end of this year."
The market for monoclonal antibodies (MAbs and Fabs), currently
estimated at $16 B, continues to demonstrate strong growth (CAGR
greater than 20%). There are widespread concerns within the
biomanufacturing community that manufacturing outputs and
improvements in process yields and efficiencies are unable to keep
pace with the ever increasing demand for MAbs required for
therapeutic applications. An increasing number of monoclonal antibody
products are antibody fragments as opposed to full chain antibodies.
Theoretically Fabs are simpler to produce but can be difficult to
purify as they lack the Fc region and cannot be purified with protein
A, the standard approach for MAbs purification. Consequently
Prometic's new ligand for Fabs purification addresses an un-met
market need with significant growth potential.
More on ProMetic MAbsorbent® ligands
ProMetic's MAbsorbent® ligands, derived from PBL's synthetic Mimetic
Ligand(TM) technology, are small synthetic molecules which have been
engineered to specifically capture and purify antibodies. A feature
of MAbsorbent® ligands is their increased robustness and lower cost
compared to biological ligands such as Protein A. The existing
MAbsorbent® products (A1P and A2P) are used primarily for the capture
and purification of polyclonal antibodies from plasma (e.g. IVIG,
hyperimmunes). Two new MAbsorbent® ligands have now been developed
which are targeted at direct capture and purification of MAbs and
Fabs. The first of these new ligands (A3P) binds to the antibody Fc
region, provides high antibody recoveries and purities, and is
capable of dynamic capacities in excess of 30g/litre. The second new
ligand binds to a different region of the antibody molecule (light
chain) and is targeted at the capture and purification of Fabs.
More on the manufacturing challenges of MAb's
Various industry reports point to growing concerns within the
biomanufacturing community that manufacturing outputs and
improvements in process yields and efficiencies are unable to keep
pace with the ever increasing demand for MAbs required for
therapeutic applications. In-part, these concerns stem from the
inherent difficulties in capturing and purifying recombinant
antibodies from bioreactors. Currently, the commonest approach to the
purification of MAbs is to use affinity resins based upon immobilized
protein A - a recombinant protein which binds selectively to a
specific part (Fc region) of the antibody molecule. However, Protein
A based resins are expensive to produce, have limited operational
lifetimes and continued reliance on such materials is a concern to
many MAb producers. ProMetic's new ligands offer a less-expensive and
more robust alternative.
About ProMetic Life Sciences Inc.
ProMetic Life Sciences Inc. (www.prometic.com) is a biopharmaceutical
company specialized in the research, development, manufacture and
marketing of a variety of commercial applications derived from its
proprietary Mimetic Ligand(TM) technology. This technology is used in
large-scale purification of biologics and the elimination of
pathogens. ProMetic is also active in therapeutic drug development
with the mission to bring to market effective, innovative, lower
cost, less toxic products for the treatment of hematology and cancer.
Its drug discovery platform is focused on replacing complex,
expensive proteins with synthetic "drug-like" protein mimetics.
Headquartered in Montreal (Canada), ProMetic has R&D facilities in
the U.K., the U.S. and Canada, manufacturing facilities in the U.K.
and business development activities in the U.S., Europe, Asia and in
the Middle-East.
About ProMetic BioSciences Ltd
Using its unique and proprietary Mimetic Ligand(TM) technology,
ProMetic BioSciences Ltd ("PBL") specializes in the development and
manufacture of robust affinity separation materials which provide
very high levels of purification. This is achieved by use of small
chemical affinity ligands designed to bind a target biomolecule
specifically and reversibly. In view of their use for the production
of therapeutics, ProMetic's affinity products are manufactured to
strict quality standards at PBL's GMP-compliant manufacturing
facility on the Isle of Man, which completed a pounds sterling 1.5
million expansion in 2005. PBL also operates an R&D laboratory
located on the Cambridge Science Park, United Kingdom.
Forward Looking Statements
This press release contains forward-looking statements about
ProMetic's objectives, strategies and businesses that involve risks
and uncertainties. These statements are "forward-looking" because
they are based on our current expectations about the markets we
operate in and on various estimates and assumptions. Actual events or
results may differ materially from those anticipated in these
forward-looking statements if known or unknown risks affect our
business, or if our estimates or assumptions turn out to be
inaccurate. Such risks and assumptions include, but are not limited
to, the Company's ability to develop, manufacture, and successfully
commercialize value-added pharmaceutical products, the availability
of funds and resources to pursue R&D projects, the successful and
timely completion of clinical studies, the ability of the Company to
take advantage of business opportunities in the pharmaceutical
industry, uncertainties related to the regulatory process and general
changes in economic conditions. You will find a more detailed
assessment of the risks that could cause actual events or results to
materially differ from our current expectations on page 21 of the
Company's Annual Information Form for the year ended December 31,
2006, under the heading "Risk Factors". As a result, we cannot
guarantee that any forward-looking statement will materialize. We
assume no obligation to update any forward-looking statement even if
new information becomes available, as a result of future events or
for any other reason.
Contacts:
ProMetic Biosciences Ltd
Steve Burton
Chief Executive Officer
+44 1223 420 300
s.burton@prometicbiosciences.com
ProMetic Life Sciences Inc.
Pierre Laurin
President and CEO
+1-514-341-2115
p.laurin@prometic.com
ProMetic Life Sciences Inc.
Anne Leduc
Manager, Communications
+1-514-341-2115 ext.2234
a.leduc@prometic.com
www.prometic.com