John T. Garbutt
adkyuz@r.postjobfree.com
OBJECTIVE
To do strain/cell line research and Process Development leading to development of biological diagnostics and therapeutics
SUMMARY
I am a Laboratory Scientist with experience growing both microorganisms and mammalian cells to express a variety of recombinant proteins. My strengths are the ability to study and determine what chemistry, conditions and parameters that cells need to achieve optimum growth, expression and function
PROCESS DEVELOPMENT CELL CULTURE SKILLS
Mammalian Cell Culture – Growth of several CHO, HEK293, & Hybridoma cell lines to express a variety of recombinant proteins. Antibodies, growth factors and viruses.
Transformation with expression vectors and growth of E.coli to express a variety of recombinant proteins
Designed and implemented experiments to compare and screen media that supported optimal growth and expression of antibodies and growth factors DOE-JMP
HPLC using affinity Column chromatography to purify Connective Tissue Growth Factor (CTGF) and antibodies
a)Sephadex Affinity column for purification of CTGF
b)Mab Select SURE for purification of antibodies
Recombinant protein purification/fractionation by affinity, ion exchange, and size exclusion chromatography, UV-Vis analysis
SUPPORT SKILLS & EXPERIENCE
Basic molecular biology skills such as DNA & RNA extraction, plasmid production and purification, DNA Ligation, PCR amplification, qPCR
Cell Line Development - Transfection of mammalian cell lines with DNA vectors to express antibodies.
Use of HPLC systems (Protein A and SEC) to purify and measure antibodies
Use of Octet and Biacore to quantitate and measure protein binding
Protein expression detection techniques - SDS-PAGE, Western Blot, Elisa
EDUCATION
Master of Science – Microbiology/Molecular Biology
University of Wyoming, Laramie WY
PROFESSIONAL EXPERIENCE
Fibrogen, San Francisco, CA Contract January2020-Present
Senior Research Associate, Cell Line Development and Protein Expression
Protein concentration and buffer exchange by tangential-flow filtration
HPLC using affinity Column chromatography to purify Connective Tissue Growth Factor (CTGF) and antibodies
c)Sephadex Affinity column for purification of CTGF
d)Mab Select SURE for purification of antibodies
Recombinant protein purification/fractionation by affinity, ion exchange, and size exclusion chromatography
SDS-PAGE and Western blotting of samples
ELISA analysis of conditioned media from cells to titer antibody levels as well as other marker proteins.
Fluidigm, South San Francisco, CA Contract February2019-December2019
Senior Reagent Manufacturing Associate, Proteomics Reagents Operations
Manufacturing of Isotopic-metal conjugated antibodies, QC testing of raw materials, in-process materials and finished goods for release. Subject Matter Expert in the development and testing of new procedures
Performed biological experiments (cell culturing, cell isolation, cell staining)
Maintenance and sustaining of the cell bank
Performed product testing using standard ICP-MS and novel Mass Cytometry technology on CyTOF instruments
Smartphage, South San Francisco, CA Consultant Jun2018- December 2018
Production of bacteriophage against Cutibacterium acnes (clinical bacterium causing acne)
Guidance and assistance to make Master Cell Bank and Working Cell Bank
Experiments to define optimum concentrations of components in growth medium to achieve optimal growth of bacterial culture (Increased growth 4X)
Testing MOI (Multiplicity of Infection) for amount of bacteriophage to infect host bacterium with to produce maximum yield of bacteriophage (Increased two logs)
Provided a bench scale clarification and filtration system that increased yield of bacteriophage 3-4X (Centrifuge, PP3 1.2um-0.65um, XLG 0.2um)
Selection of TFF system for filtration, concentration and buffer exchange (GE AKTA FLUX)
Write-up of protocol for CMO to use to scale process from ml at bench to Liters in bioreactor
BD Biosciences, San Jose, CA Contract Jan2018-Jun2018
System Verification and Validation Scientist
Execution of verification activities throughout all phases of the FACS product development process
Assist in design of test methods and test strategy
Development and execution of formal protocols
Analysis and interpretation of results
Communication of results and their impact through written reports, and interactive discussions
Conducted experiments in flow cytometry to define best laboratory procedures and study designs
JGB Bio Pharma, Mountain View, CA Short Term Contract July-Aug 2017
Quality Control Analyst
Growth of Modified Bone Marrow-Derived Mesenchymal Stem Cells for analysis
Receipt and catalog of frozen clinical samples of stem cells
Thaw of stem cells and expansion for tesing
Staining of stem cells for FACS analysis and PCR
Ignite Immunotherapy, Alameda, CA Short Term Contract March 2017
Research Associate II, Start-Up Lab Operations
Assist in the procurement, set-up of equipment, stock supplies and cell banking
Collect quotes on equipment and arrange for delivery
Oversee and install laboratory equipment
Receive and catalog shipments of cell & virus cultures
Thaw expand cell culture and research cell banking (RCB)
Infect cell for virus propagation and RCB
Merck Research laboratories, Palo Alto, CA Contract March2016-Jan2017
Technical Specialist, Antibody Generation
Growth of Hybridoma cell lines to produce antibodies for characterization and scale up
Expansion of screened hybridoma cell lines to produce antibodies for characterization, analytical testing, and cell banking
Growth of rat and mouse hybridoma cell lines in T-Flask, Spinner tube, shake flask, Integra bioreactor and small scale bioreactor to produce antibodies for epitope binning, sequencing and kinetic analysis
Designed experiments for production, work flow, quantization by octet384 and initial purification. Documentation of work & results in database and electronic notebook with presentation of analyzed data to various groups
Portola Pharmaceuticals, South San Francisco, CA Contract April2015-Jan2016
Associate Scientist, Biology
Cell line development in CHO to express Andexanet by transfection and electroporation
Optimized NEON electroporation conditions for vectors
Successfully generated CHO-S culture that had stable integration of linearized plasmid DNA
Selection of 10X producing cell line pools for Andexanet
Designed and planned out bioreactor laboratory
Selection of bioreactor system and supporting equipment
Configuration, Set-Up, Operation and harvest of 10L stirred tank
Documentation of data into reports, Power Point Presentations
University of California-San Francisco-Mission Bay July2013- April2015
Staff Research Associate III, BioNanotechnology
Production of M13 bacteriophage from Lab-Scale bioreactors to supply ssDNA to fold and construct multiple DNA nanostructures.
Developed a bench-scale process to produce M13 from 2L bioreactors
Developed a recovery and purification process for M13 bacteriophage
Extract and purify M13 DNA
Assist in the folding of M13 template DNA into “DNA Origami Nanostructures”
Assisted in molecular biology, protein expression and strain development
Developed a qPCR assay for quantification of M13 DNA
Medimmune LLC, Santa Clara, CA July2010-Dec2012
Associate Scientist II, Vaccine Clinical Production
Process development and cGMP clinical manufacturing of Live Attenuated Influenza Vaccine (LAIV). Establish and prepare Working Cell Bank, Virus Working Banks.
Thaw of WCB adherent MDCK & Vero cells
Expansion of cells in T-flasks and roller bottles with determination of parameters and timing of culture to ensure optimum growth
Set-Up, inoculation, control with data logging of 50L Single Use Bioreactors SUB and harvest of virus
Preparation of Master Production Records (MPR), Technical Reports and presentations
Henlius Biopharmaceuticals, Inc. Fremont, CA Oct2009-June 2010
Consultant, Process Sciences
Process development of cell culture systems expressing biosimilars and biobetters (mabs and recombinant proteins) for malignant tumors and auto-immune diseases.
Recommended make, model and scale of bioreactor system for production of biosimilars from CHO cell culture
Arranged for facilities to support bioreactor operations (air compressor, gas cylinders and manifold controller)
Coordinated Installation of bioreactor systems
Training of personnel to set-up, operate, sample and harvest bioreactor cultures
Recommended and acquired off-line equipment for analysis of metabolites and counting of cells ( NOVA FLEX and Vicell)
Sutro BioPharma Inc, South San Francisco, CA Contract Dec 2008-July 2009
Senior Research Associate, Process Sciences
Process development of pilot plant scale fed-batch fermentation of E.coli and conversion into cytoplasmic extract for cell free protein production. Research on cell-free extract protein production technology.
Operation of bioreactors at 1L-10L-200L for growth of E.coli
Homogenization of E.coli cells to form extract
Disc-Stack Centrifugation to differentially separate extract into active component
Running of assays for measuring growth and production of recombinant proteins
Neugenesis Corporation, Burlingame, CA Contract Sept 2007 – April 2008
Fermentation Scientist
Process development for bioreactor growth of filamentous fungus Neurospra Crassa for production of recombinant proteins and antibodies
Set up, operation and harvest of Sartorius stirred tank (3L) bioreactors
Processing of bioreactor time course samples for wcw and dcw measurement of accumulated cell mass
Off-line analysis of glucose consumed and metabolites generated for media development
Feeding of nutrients for fed-batch bioreactor process to drive expression of proteins
Analysis of expressed proteins by SDS-PAGE and western blot
Preparation of technical reports and presentation of results to staff
Berlex Biosciences, Richmond, CA March2005 - April2007
Associate Scientist III, Upstream Process Development
Cell Culture Process Development - Growth of mammalian cells to produce adenovirus, growth factors and antibodies.
Design and implementation of experiments to compare and screen cell culture media that would support optimal growth and expression of recombinant proteins from several different cell lines.
Batch Bioreactor Process Development for the production of recombinant proteins. Determination of Process effects of pH ranges and shifts, dissolved oxygen setpoints, inoculation, seed train and recovery.
Developed Fed-Batch Bioreactor Process that improved yield of antibody 5X over batch process by tailoring a feed strategy that optimized use of substrate with minimum accumulation of byproducts
Scale-up of Fed-Batch process from 3L to 1000L and use of scale-down methodology to trouble shoot the fed-batch process to fit schedule and capacity of GMP facility
Berlex Biosciences, Richmond, CA April2002 – March2005
Associate Scientist II, Upstream Process Development
Cell Culture Process Development - Growth of mammalian cells to produce adenovirus, growth factors and antibodies.
Served on multiple project teams that Coordinated with Research and Development to deliver timely produced materials in support of multiple projects
Wrote numerous technical reports for process development, process transfer and SOP establishment for GMP manufacturing
Data from studies was analyzed with results presented in departmental meetings and scientific conferences
Use of HPLC systems (ProteinA and Size Exclusion Chromatography) to purify and measure antibodies
Berlex Biosciences, Richmond, CA February1999-April2002
Associate Scientist I, Upstream Process Development
Cell Culture Process Development - Growth of mammalian cells to produce adenovirus for Gene Therapy for Myocardial Ischemia
Shake Flask studies to determine optimal Multiplicity of Infection (MOI)
Shake Flask studies to select optimal media for growth of host cell and infection medium to produce virus
Preparation of cell banks (RCB) of HEK293 and Perc.6
Perfusion Bioreactor process development to produce high viability, high density inoculums to seed adenovirus production bioreactors
Continuous Batch bioreactor process development for production of recombinant adenovirus. Selection of optimum pH, temperature and dissolved oxygen. MOI