Bryan Hernandez

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== Projects ==
== Projects ==
===[http://parts2.mit.edu/wiki/index.php/University_of_California_Berkeley_2006| Addressable Conjugation in Bacterial Networks]===
===[http://parts2.mit.edu/wiki/index.php/University_of_California_Berkeley_2006| Addressable Conjugation in Bacterial Networks]===
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===[[Sortostat]]===
===[[Sortostat]]===
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The Sortostat is a microfluidic chemostat integrated with a cell sorter.  My project consists of demonstrating the sortostat's chemostat functionality, a technique rarely seen in microfluidics. Chemostasis must first be demonstrated before any meaningful demonstration of the sortostat's sorting capabilities can be shown. The sortostat's sorting ability is limited by the extent to which it can make optical descriminations between cells.  Therefore, in order to demonstrate its sorting ability, two visually different populations of cells will be grown to steady state after which sorting is initiatedIf successful the populations will clearly diverge in number, the one sorted against will diminish well below its steady state level and the one preserved should rise by the same amount that the other falls. The total population of cells in the chemostat should be conserved in the end if chemostasis was maintained throughout sorting.          
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The Sortostat is a microfluidic chemostat integrated with a cell sorter.  My project consists of demonstrating the sortostat's chemostat functionality, a technique rarely seen in microfluidics.  
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'''Immediate Goals'''
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*Debug all engineering-related problems with sortostat.
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*Demonstrate Sortostat's ability to attain chemostasis in a population of E. Coli.
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*Demonstrate Sortostat's ability to sort two phenotypically different populations of E. ColiIn this case, I will be using a mixture of E. Coli expressing CFP and YFP.  
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*Demostrate Sortostat's ability to select for an arbitrary population of cells that are phenotypically different from others and maintain this population at a steady state.
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*[[Bryan Hernandez/UROP Proposal|UROP Proposal]]
*[http://www.midgard.liu.se/~b00perst/chemostat.pdf Chemostat Theory]
*[http://www.midgard.liu.se/~b00perst/chemostat.pdf Chemostat Theory]
*[[Sortostat/Experiments]]
*[[Sortostat/Experiments]]
*[[Sortostat/Growth Tests]]
*[[Sortostat/Growth Tests]]
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'''Project Goals'''
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*[[Bryan Hernandez/UROP Proposal|UROP Proposal]]
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[[IGEM:UC Berkeley/2006/bryans -80 stocks|-80 stocks]]<br>
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[[media:oligos.xls|oligos]]
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*[[Sortostat]]
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#Debug a microfluidic chemostat ([[Sortostat]]) to improve the time-varying specific selection of cell populations.
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#*Currently troubleshooting problems:  i) Cell Death after 3-4 days. This problem has not been an issue for the past few runs that lasted over 300 hours.  We initially thought the cell death was due to oxygen depletion however if this was the case we'd expect to see this more consistantly. and ii) Inaccurate cell counts due to poor image processing.  There is still much to be done to resolve this issue.  Perhaps using software such as Cell Profiler will help to achieve more accurate cell counts.
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#Evaluate the response of populations of E.Coli cells containing engineered genetic circuits (http://parts.mit.edu) to particular selective pressures using the Sortostat.
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== Bio ==
== Bio ==

Revision as of 02:51, 23 November 2006

Contents

Projects

Addressable Conjugation in Bacterial Networks

iGEM UC Berkeley

  • Our project was to create an addressable cell-to-cell communication mechanism in e. coli.

notebook

Sortostat

The Sortostat is a microfluidic chemostat integrated with a cell sorter. My project consists of demonstrating the sortostat's chemostat functionality, a technique rarely seen in microfluidics.

Immediate Goals

  • Debug all engineering-related problems with sortostat.
  • Demonstrate Sortostat's ability to attain chemostasis in a population of E. Coli.
  • Demonstrate Sortostat's ability to sort two phenotypically different populations of E. Coli. In this case, I will be using a mixture of E. Coli expressing CFP and YFP.
  • Demostrate Sortostat's ability to select for an arbitrary population of cells that are phenotypically different from others and maintain this population at a steady state.
  • UROP Proposal
  • Chemostat Theory
  • Sortostat/Experiments
  • Sortostat/Growth Tests

-80 stocks
oligos

Bio

  • I am currently an undergraduate researcher in the Endy Lab at MIT. I am currently building and characterizing orthogonal riboregulators. Learn more about riboregulators and the work I have done here
  • MIT Class of 2009; Majoring in Mathematics and Biological Engineering.
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