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Published byElla Denner Modified over 9 years ago
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Zohora Iqbal PhD student
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My Education Path
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Undergraduate – Las Positas/Chabot College (2.5 years) – UC Berkeley (2.5 years) Working at start-up – Ion Torrent (1 year) Graduate School – UC Berkeley and UC San Francisco combined graduate program (current)
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Bioengineer EngineeringBiology technical problem- solving study of life and medicine BIOENGINEERING amyris.com
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Bioengineering Research at Berkeley Bioinstrumentation – imaging: MRI imaging near metal implants – diagnostic tools: micro/nano scale protein analysis – bioMEMS: microfabricated devices Microfluidics, drug delivery systems – artificial organs Biomaterials and Nanotechnology – biomimetics – surface coating for implants Cell and Tissue Engineering – Stem cells – single cell studies to better understand cellular systems Computational Biology – dna and protein data analysis. – producing models of proteins or biomolecules Systems and Synthetic Biology – controlling microbes to produce desired molecules such as insulin…fuels, plastics..etc. medication.. https://www.youtube.com/watch?v=_i-_1QdY2Zc
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Undergraduate Research Experiences Sandia National Lab in Livermore – microfluidics: single cell macrophage studies – picoliter reaction chambers Virginia Tech: Davalos Lab – simulation of devices for cancer cell separation UC Berkeley: Herr Lab – on-chip protein separation based on isoelectric point
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Working at Ion -array of wells -each one holds a bead with thousands of single stranded DNA -nucleotide flows over it, and if one gets incorporated, H+ released, and so by measuring the pH
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Why PhD? More opportunities – especially in the bioE field…lot of work going on in research – easier to lead your own project:
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Rotations Roy Lab – lung project Maharbiz Lab – Miniaturized Tesla turbine Herr Lab – protein separation PICKED ROY LAB: Artificial Kidney
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Kidney
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Nephron cleans out toxins and excess substances from blood filtration based on size driven by blood pressure reabsorption of necessary nutrients, solutes and water via active and passive transport
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End Stage Renal Disease ESRD: complete or near complete loss of kidney function, often due to diabetes and/or hypertension Current treatment: – kidney transplant – hemodialysis typically done ~3x/week using external diffusion driven dialysis system – peritoneal dialysis patient’s own pertoneum in diffusion driven filtration
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ESRD Statistics Data from 2010 – more than ~170,000 new ESRD patients added – prevalence: ~0.6 million – total kidney transplants: 17,778 – total Medicare ESRD expenditure: $33 billion – total ESRD expenditure: $47.5 billion
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Artificial Kidney 2 parts: filtration and reabsorption – filtration based on size – reabsorption bioreactor use of silicon membrane – why silicon? uniformity high selectivity robustness ease of fabrication through MEMS technology mass production high throughput given area
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Silicon Membrane Pore Size: – long slits pore length: 4.5 um pore height: 13 nm pore pore width: 40 um
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Biofouling -Cells and proteins attach to surface limiting filtration
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polySBMA surface coating BrTMOS initiator Silicon SBMA
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Key Points Be a team player Know how to avail the resources you have Learn how to learn: be willing to learn new materials
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