Stanford At SfN11 - Wednesday Schedule
/The Stanford Neuroscience affiliates presenting their research on Wednesday, Nov 16 are:
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The Stanford Neuroscience affiliates presenting their research on Wednesday, Nov 16 are:
The Stanford Neuroscience affiliates presenting their research on Tuesday, Nov 15 are:
The Stanford Neuroscience affiliates presenting their research on Monday, Nov 14 are:
What has the Stanford Neuroscience community been up to? Find out by visiting our presentations and posters at SFN2011! The Stanford Neuroscience affiliates presenting their research on Sunday, Nov 13 are:
What has the Stanford Neuroscience community been up to? Find out by visiting our presentations and posters at SFN2011! The Stanford Neuroscience affiliates presenting their research on Saturday, Nov 12 are:
Georgia Panagiotakos is a senior graduate student in the labs of Drs. Ricardo Dolmestch and Theo Palmer, where she studies mechanisms by which mutations in the voltage gated calcium channel CaV1.2 influence neurogenesis in the developing brain and contribute to the pathophysiology of autism spectrum disorders. The spring/summer Georgia attended two scientific conferences in Europe, and graciously volunteered to write a two-part blog post chronicling her experiences.
Ironically, I intended this blog post to be short and sweet. Now I’m staring back at what has amounted to a novella. Let’s move on from Greece to Germany then. The cortical development meeting (ed. note: Cortical Development: Neural Stem Cells to Neural Circuits). proved to be a source of new friends, as well as the birth of a new collaboration that would benefit my work. I returned to Stanford excited to get back to my science. A mere three weeks later found me on yet another plane (and decidedly more nervous) headed for Washington, DC - the first stop on the way to Lindau, Germany, a picturesque, tiny (read: if you are walking in any direction for longer thanten minutes without seeing water, you have been walking in circles) island in Lake Constance that was the site of the 61st Lindau Meeting of Nobel Laureates. I must admit my ignorance in saying that I had no idea there was an island in Germany prior tothis meeting. I should also take a moment here to thank one of my advisors for nominating me for this meeting. It was such an exceptional opportunity that I didn’t quite appreciate until I was actually living it. The truth of the matter is that there is relatively little that I can say to accurately convey the extent to which I enjoyed this week in Germany (I never imagined that Broca’s area would actually fail me at some point). I met new colleagues from all over the world that I envision running into at other meetings several years from now. I had dinner and lunch, respectively, with the co-discovers of one of the most fundamental techniques in use in neuroscience today, the patch clamp. I struck up relationships with other young scientists that I can see myself collaborating with for many years to come. And all this came from an email I received from my advisor some time last year that said “Hey, I’m thinking of nominating you for this thing. Would you go?”
In lieu of describing the details of this meeting, much of which was focused on science as a career path and the responsibilities we have as scientists, I’ve decided to stop my chatter here and leave you with the series of memorable quotes that I promised at the beginning. I hope you’ll find them as enjoyable as I did. You’ll see that they run the gamut from hilarious to inspirational.
I’ll start with Oliver Smithies (arguably the most adorable scientist that ever lived, the darling of the Lindau meeting, and the winner of the Prize for his work in gene targeting and homologous recombination). He was by far one of the favorites of everyone in attendance, largely because he continues to do science to this day, at the age of 86, and has managed to retain a child-like enthusiasm for science that I can only wish to maintain through grad school, let alone an entire scientific career:
Next up is Ada Yonath, winner of the Prize for her work on the structure of the ribosome. I attended her small discussion session and collected these pearls:
For the readers of this blog, no introduction is needed for Erwin Neher, co-recipient ofthe Nobel Prize (with Bert Sakmann) for “their discoveries concerning the function of single ion channels in cells”. I had the opportunity to have dinner with Neher and lunch with Sakmann, where I learned that Neher loved running around the lab with his soldering iron making constant improvements to the rig. It sounds like not much has changed in terms of how electrophysiology is done over the years. One quote from Neher’s talk that served to put time invested into a project into perspective:
Undeniably one of the most vocal personalities at this meeting, Sir Harold Kroto, winner of the Prize in chemistry for the discovery of C60, was not shy about expressing his opinions (as you’ll undoubtedly appreciate upon reading his quotes). An interesting fun fact, it turns out that Kroto acted in a play with Sir Ian McKellan in the fifth grade! That must have been some middle school. Below is a series of quotes from his plenary session and smaller discussion session:
Moving on, we come to Roger Tsien, who received the Nobel Prize in Chemistry for “his discovery and the development of green fluorescent protein”. He has since pioneered the development of many of the calcium imaging dyes widely used today. His plenary session was both informative and entertaining, and I have collected some of those more memorable quotes and stories here:
Avram Hershko, who received the Nobel Prize for his work on the ubiquitin system, delivered an excellent overview of the ubiquitin pathway in health and disease. He closed his plenary talk with lessons learned throughout his career and advice for young scientists that included:
There you have it. Overall, I have to say that what impressed me the most was how many of these laureates pursued questions simply because they were interesting to them and not because they would yield a “big result”. More impressive still is how many of them did not realize how seminal their work would turn out to be. I suppose this means that no matter how insignificant we think our science might be now (and I would argue it is easy to think this at various points throughout grad school), we might discover that other people will become interested later. So.. dream big I guess. How’s that for a positive note?
Georgia Panagiotakos is a senior graduate student in the labs of Drs. Ricardo Dolmestch and Theo Palmer, where she studies mechanisms by which mutations in the voltage gated calcium channel CaV1.2 influence neurogenesis in the developing brain and contribute to the pathophysiology of autism spectrum disorders. The spring/summer Georgia attended two scientific conferences in Europe, and graciously volunteered to write a two-part blog post chronicling her experiences. This past month has marked the first time in my graduate career that I have had the opportunity to travel overseas for a scientific meeting and interact with giants in my field. In a stroke of remarkable luck, I was able to attend two different conferences, both of which took place in Europe. The first of these was small and specialized, an assortment of about two hundred scientists from around the world focused exclusively on understanding the mechanisms underlying brain development and the evolution of the human cortex (ed. note: the conference is question is entitled Cortical Development: Neural Stem Cells to Neural Circuits). The second meeting was quite broad, bringing together students and postdocs from over eighty countries to interact with twenty-six Nobel laureates in medicine and physiology (ed. note: this is the Lindau Nobel Laureate Meeting).
Admittedly, I approached this second meeting with some nerves (How difficult would it be to really have a stimulating scientific discussion with someone whose research interests are so distant from mine? Could I really convey the excitement I feel about what I do and the importance of neuroscience research to someone focused on understanding the structure of a protein or examining the life cycle of a virus?) - these fears proved to be moderately irrational and this experience was one that I will never forget. In telling some friends about these two wonderful experiences, I was prompted to transcribe some of what I heard into my first (and likely last) entry on the Stanford neuroblog. I needed a little pick-me-up today, so what follows is a pleasant distraction, a short description of each meeting, interspersed with a series of memorable quotes.
Surprisingly (read: not at all surprisingly), it appears that I am incapable of writing something “short”. I hope that this entry is sufficiently interesting to you to allow me some liberty with words.
During the third week of May, I flew to Greece (my homeland - conference for the win!) to attend a meeting on cortical development. I suppose I should preface everything I write here with the statement that I have been intrigued by cortical development, and how it is that specific cell types are generated and functionally connected in the developing brain, for about as long as I have been interested in neuroscience. This really reflects itself in the fact that a significant portion of my scientific career to date (young as it is) has centered around aspects of this very broad question. In light of this, the opportunity to attend this meeting was really a remarkable treat. An additional disclaimer: It didn’t hurt that the meeting was to take place on the island of Crete. And I cannot say that we didn’t take advantage of the beautiful weather and majestic Mediterranean sea - but the meeting itself proved to be on par with the exceptional location. Over the course of four days, we heard from the likes of Arnold Kriegstein, Pasko Rakic, Gord Fishell, Jeff Macklis, Arturo Alvarez-Buylla, Chris Walsh, and others, in sessions focused on stem cells, neurogenesis and neuronal differentiation, neuronal migration, circuit formation and neuronal circuits. I decided not to detail every talk here, in the interest of time (both mine and yours), and to focus instead on my impressions from the meeting now that I’ve had several weeks to ruminate.
Two over-arching themes that seem to be driving the field of cortical development really popped out for me at this meeting:
In particular, many of the talks centered around understanding the development, migration and maturation of cortical interneurons and exploring their role in sculpting cortical circuit function (a long standing interest of mine that I like to think of as a guilty pleasure of sorts). The conclusion of the series of talks surrounding this question requires me to, if I may, borrow a phrase that Jeff Macklis used during his excellent talk describing the acquisition of neocortical projection neuron identity - a “combinatorial multi-state logic” in the form of the activation or repression of specific transcription factors at different stages of development, responsiveness to guidance molecules, feedback mechanisms and neuronal activity (as beautifully depicted in a recent paper from the lab of Gord Fishell) is employed by the developing brain to generate remarkably diverse populations of interneurons that terminate in specific locations, exhibit different physiological properties and integrate into specific cortical circuits. Interesting to think about is how these strategies are integrated by individual cells as they mature and acquire their terminal fates.
The other point of emphasis at this meeting was the development of hypotheses regarding the evolution of the human cortex, in particular the expansion of the upper layers and the diversification of neuronal populations. A significant proportion of speakers, whether they were studying interactions of neural progenitor cells with the extracellular matrix, or basic mechanisms of cell division, or human-specific disease mutations, at the very least commented on how their finding might impact our understanding of human brain evolution. Arnold Kriegstein started the meeting off by presenting his beautiful work describing the behavior of outer radial glial cells, a new class of neural progenitor cell located in a separate anatomical zone in the developing monkey and human brain termed the outer subventricular zone (oSVZ). He showed us the elegant time-lapse images for which he is famous, depicting these cells translocating their somata (literally “jumping”) and subsequently dividing to give rise to daughter cells by undergoing characteristic modes of cell division. The massive expansion of the oSVZ during mid-gestation in humans prompted Kriegstein to argue the importance of these outer radial glial cells for the expansion of the human neocortex, through an increase in the number of neurons being generated. He further suggested that these different progenitor niches in the developing brain might allow for the emergence of heterogeneous cell types even at the same birthdate. That same afternoon, we heard Pasko Rakic (in a session chaired by Kriegstein himself) assert that the oSVZ is not the most important feature for the evolution of the cortex. Gauntlet thrown? We later heard from Chris Walsh, who described another approach at uncovering important players in human cortical development, the use of Next-Gen sequencing to identify disease mutations that cause cortical malformations. He went on to talk about a separate project in his lab that focused on the role secreted factors in the cerebrospinal fluid might play in instructing cell fate decisions and proliferation in the developing brain.
The meeting closed with what admittedly may have been one of my favorite talks, a beautiful story by Nenad Sestan describing the patterning of microcolumns in the developing human cortex and efforts towards completing a developing human brain transcriptome. I would be remiss if I didn’t also give a shout out to my friend and fellow Stanford neuroscience program graduate student, Alex Pollen, who (for once not talking about penile spines!) presented a wonderful poster describing his work aimed at identifying human-specific deletions of regulatory elements that may underly the evolution of human-specific brain features. Overall, I was left with the impression of a vibrant field in which a number of labs are using very different approaches to unravel the mechanisms underlying human-specific cortical expansion. It’s only fitting that I close this part with a quote from the man himself, Pasko Rakic: “It’s more complicated than I say, but they only gave me forty minutes.”
Eagle-eyed visitors to the Stanford Neuroblog may have noticed a decline in the volume of posts that are being published. Unfortunately, this reduced volume will likely continue into the summer months, as the editor is currently prepping for her qualifying examination. Following the completion of her quals (hopefully sometime in mid-July), the editor expects to resume full blogging duties. Until then, with many apologies, readers are warned that they should probably not expect too many updates.
Via fellow Stanford-based blog Scope, news of a new website launched this week featuring the musical talents of evolutionary rapper Baba Brinkman. Last year, a post on this blog described Mr. Brinkman's evolutionary-themed music, which he was performing during a show entitled The Rap Guide to Evolution. The show is described on Mr. Brinkman's website as an exploration of "the history and current understanding of Darwin's theory, combining remixes of popular rap songs with storytelling rap/poems that cover Natural Selection, Artificial Selection, Sexual Selection, Group Selection, Unity of Common Descent, and Evolutionary Psychology." Notably, Mr. Brinkman's lyrics were throughly peer-reviewed by University of Birmingham's Dr. Mark Pallen, and are therefore highly scientifically and historically accurate.
Now, Mr. Brinkman, with support from the Wellcome Trust, has launched The Rap Guide to Evolution website, featuring videos of his songs (1 video is currently posted, with 11 more on their way), for the purpose of providing an educational tool to enhance the teaching of basic evolutionary concepts. A DVD compilation is in the works (which will include a handbook of lesson plans) with a scheduled release date for the September 2011 semester.
In total, the website will feature 12 videos. As of the publishing of this post, video for one song, Performance, Feedback Revision, has been uploaded. As I wrote last year, this song is one of my favorites, beginning with a lyrical account of how Mr. Brinkman creates his songs, and expanding into a description of the concept of descent-with-modification.
And sometimes people ask me: How does your show get written. Like this: Performance. Feedback. Revision … And how do human’s beings ever learn to do anything Like this: Performance. Feedback. Revision And evolution is really just kind of an algorithm that goes Like this: Performance. Feedback. Revision So the genetic code of every living thing was written Like this: Performance. Feedback. Revision So the genes are like a text with a thousand pages And revisions occur in the random changes that come from mutations. And when they see the light, well that’s the performance, that’s the phenotype.
Professional scientists, teachers, and members of the general public will all find Baba Brinkman's musical stylings highly enjoyable and remarkably educational. Personally, I am looking forward to the upcoming videos, and plan to use The Rap Guide to Evolution the next time I have to explain evolutionary biology to my parents.
Breaking news, Dr. Karl Deisseroth, professor, practicing physician and pioneer of the field of optogenetics has left Stanford University. Backyard Brains, based in Detroit, MI, has announced the hiring of Karl as their first salaried employee. The announcement, posted this morning on the Backyard Brains website, called the hiring a "neurotechnology coup". An "official statement" from the company reads, “Please join us as Detroit and Backyard Brains welcomes Karl to his new home in the state of Michigan. We are looking forward to Karl building on his 13-year experience at Stanford by bringing Neuroscience to the people. We are cautiously optimistic to see what Karl has in store in the years to come.”
Members of Karl's laboratory were surprised by this news, of which they were informed this morning via the email below.
just noticed this come online-- did not want you to find out this way. http://backyardbrains.com/news/index.php/tag/karl/ everyone think about this and decide on the lab move, take into account your family, project, and other considerations. Please let me know if you want to come along. I need to have a list of the people moving with me by next Thursday.
thanks K
Members of the lab are quoted as responding:
..."It's a tough decision, but really--a basement is a basement, right?" "The tipping point for me was when Karl was able to recruit Shatz Lab member Jaimie Adelson to the autonomous cockroach project." "FML" "Look, windows!"
Good luck to the Deisseroth lab basement dwellers as they mull over this big decision.
(quotations kindly provided by the Deisseroth lab)
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