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MY RESEARCH JOURNEY
Apr 2006- Present
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Scientist, Amgen
British Columbia (ABC), Burnaby, CANADA. Reporting to Senior
Director.(Abgenix was acquired by Amgen in April 2006)
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Senior Team Leader in the site. Leading many antibody generation
projects, leading the Kinetic analysis and molecular biology groups.
Leading antibody effector function improvement projects.
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Nov 2000- April 2006
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Senior
Scientist/Scientist, Abgenix Biopharma Inc., Burnaby, CANADA.
Reporting to Associate Director/Director.
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As a senior team leader, I managed the projects connected to the
generation of human monoclonal antibodies from Xenomouse using SLAM
technology (around 20-25 projects per year) for Abgenix and its
partners.
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Successfully implemented an easy and efficient system for cloning
and expression of human antibodies.
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Worked with bioinformatics team and developed a high throughput
human antibody sequence analysis and annotation system.
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Mentored the group, consisting of Junior Scientists and Research
Associates, to analyze and document the sequences for patent filing.
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Worked with off-site Scientists to select projects, define time
lines, and successfully met the time lines.
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Developed a method to measure the affinity of antibodies in sub-picomolar
range and supervised Junior Scientists to successfully complete the
measurement of affinities for several antibodies.
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Developed methods to measure the affinity of antibody to
membrane-expressed antigens and native antigens available only at
picogram quantities. Leader for developing monoclonal antibodies to a
tumor target.
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Lead the project from immunization of Xenomice, generating
antibodies, preclinical in vitro and in vivo characterization and up to
patent filing.
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Abgenix leader for generation of antibodies for two of the tumor
targets for Abgenix's partners.
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Working closely with the Scientists of Abgenix's partners to
generate human antibodies using Xenomice according to the mutually
defined design goals and timeline.
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Member of the Abgenix Biopharma management team and Animal Care
Committee.
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Abgenix Biopharma's Chemical Safety Officer and Chair of Safety
committee.
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1998- Nov 2000 |
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Research Scientist,
ImmGenics Pharmaceuticals Inc., Vancouver, CANADA. Reported to CEO and
President. (ImmGenics was acquired by Abgenix in Nov 2000).
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Team leader for the single cell RT-PCR amplification, cloning and
expression of rabbit and macaque monoclonal antibodies.
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Directed the team to generate antibodies for several projects
(7-10 projects per year) involving efficient expression of rabbit and
macaque monoclonal antibodies.
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Directed the group to sequence all the antibodies amplified in
the lab, analyze and annotate them and generate database for each
species of antibodies.
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Supervised a team that is responsible for the high affinity
measurements of the generated antibodies (at least five different
antibodies per project).
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Involved in the recruitment of employees, new employee training
and development.
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1993- 1998 |
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Research Associate,
Biomedical Research Centre, University of British Columbia, Vancouver,
CANADA.
Project: Generation of Human monoclonal antibodies
for therapy by a novel technology.
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One of the four lead members of a team, which developed,
“Selected Lymphocyte Antibody Method” (SLAM) for the generation of human
monoclonal antibodies.
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Responsible for developing single cell RT-PCR amplification of
human Immunoglobulin V regions, cloning and their expression as
recombinant antibodies.
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Mentored and supervised one research technician and several co-op
students for cloning and expression of antibodies.
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Generated antibodies for three different targets (tetanus toxin,
human influenza and human CMV) from single human B cells using SLAM
technology, expressed as recombinant human monoclonal antibodies.
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Characterized a number of anti-tetanus toxin antibodies for their
efficacy in neutralizing the toxin in-vivo in animal models.
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Developed the solution binding kinetic assays using KinExA and
measured the affinities of several very high-affinity (low picomolar
range) antibodies.
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1992- 1993
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Research
Associate,
Inflammation and Immunology-Rheumatology
Research Unit (IIRRU), Le Centre Hospitalier de l'Universite Laval (CHUL),
Laval University, Quebec, CANADA.
Project: Effect of cytokines on
the differential regulation of chemokine gene expression in human
rheumatoid synovial fibroblasts |
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1990 -1992
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Postdoctoral Fellow,
IIRRU, CHUL, Laval University, Québec, CANADA.
Project: Analysis of chemokine gene expression in human rheumatoid
synovial fibroblasts.
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Studied the gene regulation and expression of chemokines
including Interleukin-8, RANTES, MCP-1 and MCP-2, in human rheumatoid
synovial fibroblasts and neutrophils.
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Have shown that the chemokines of the PF4 superfamily are
differentially upregulated in synovial fibroblasts depending upon the
stimuli.
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Showed that the amount of C-X-C and C-C chemokines produced at
the site of inflammation, by the fibroblasts, depends on the nature of
the monokines and lymphokines to which these fibroblasts are exposed and
the type of leukocyte infiltrated into the inflammatory site could be
controlled by the nature of the existing cytokine/chemokine stimuli.
Also showed that the neutrophils accumulate at the site of acute
inflammation are capable of releasing more IL-8 and hence could induce
an autocrine response. Glucocorticoids have differential effect on the
transcriptional and post-transcriptional regulation of each of these
genes.
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Involved in cloning and sequencing promoters of some of these
chemokine genes.
I have six publications from
this work.
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1989 - 1990
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Postdoctoral Fellow,
Molecular Endocrinology Lab., CHUL, Laval University, Québec, CANADA.
Project: Cloning the
steroid hormone receptor genes, study their regulation and expression.
· Successfully
cloned a transcription factor that binds to the promoter region of the
human glucocorticoid receptor gene and represses the expression of
glucocorticoid receptor.
· Acquired training
on cloning and sub-cloning of genes, screening cDNA libraries, mapping
the genes, and expressing cDNAs as fusion proteins. Using chimeric
steroid receptor gene constructs, conducted considerable gene transfer
studies. Studied the expression and regulation of steroid receptor genes
by introducing chimeric genes into mammalian cells.
The
above findings contributed to publication of three publications
in leading peer reviewed journals.
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1982 -1988
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Ph.D., University of Madras, INDIA.
Title: “Effects
of tolbutamide and glucose metabolism on the functions of beta cells of
the pancreas in rats”.
· Studied the effect
of thiamine deficiency (TD) on the secretion and synthesis of insulin.
Unlike in the developed countries, where over nutrition is the main
cause for nutritional disorders, in developing countries including
India, malnutrition causes a variety of disorders. On this basis,
thiamine deficiency was selected for the study. The effect of thiamin
deficiency on the endocrine functions of the pancreas was studied in
vitro and in vivo in a rat model. Part of the study was also performed
on isolated pancreatic islets.
The study led to the
following crucial findings:
1) Glucose tolerance was impaired in thiamine-deficient rats.
2) Even though the fasting blood glucose was high in TD, the fasting
serum insulin levels were low, suggesting that the synthesis and/or the
secretion of insulin from pancreatic islets were certainly affected.
3) The in vivo insulin synthesis in response to tolbutamide
administration was low in TD.
4) In the isolated rat pancreatic islets, the insulin secretion, the
metabolism of glucose, and the response of thiamine-deficient islets to
the administered glucose and tolbutamide were impaired.
5) Malnutrition also could cause diabetes by impairing the glucose
metabolism in the islets of Langerhans.
The above findings led to four publications.
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