Crowdsourcing gene predictions & estimating population sizes

bmpvieira.com/seminar14

Bruno Vieira | @bmpvieira

QMUL BBSRC

Bioinformatics & Population Genomics

Initially address two issues


Scaling up gene prediction


Infer the efective population size history in insects with the PSMC method (Li, 2011).

Gene prediction?

Why is this important?

Genes are the basic building block of organisms

How?

Gene prediction models


Gene prediction models (Sleator, 2010)

Web application to crowdsource gene prediction

github.com/yeban/afra

Crowdsource?

Crowd + Outsource

From: http://www.flickr.com/photos/jamescridland/613445810/sizes/z/

Citizen Science

From: http://www.jamesborrell.com/10-lessons-from-a-year-of-citizen-science-my-talk-from-the-citizen-cyberscience-summit/

James Borrell | @James_Borrell
Citizen Cyberscience Summit 2014 | #ccs14

Self-reward helping Science

Zooniverse success

From: http://infobeautiful2.s3.amazonaws.com/goggle_boxes.png

Science? I don't care...


From: http://www.jenniferhudson.com/us/photos/my-lazy-cat

Cognitive surplus

From: http://infobeautiful2.s3.amazonaws.com/goggle_boxes.png

Shirky, 2010

Gamification

Gamification

A way to engage users into solving a problem by adding game mechanics to it

Useless game - Flappy bird

50 milion downloads

Flappy bird screenshot

flappybird.io

Useful - Genes In Space

Cancer Research UK screenshot cancerresearchuk.org

Previous work

Scale up and Gamify another Open Source project

gmod/apollo yeban/afra


Anurag Priyam Anurag Priyam | @yeban

Current work

Scale up

Move most of the logic to the browser

BBSRC BBSRC

Scale up

Biology logic on the browser

bionode

github.com/bionode/bionode

Gamification

Dashboad mockup

Dashboard mockup

Machine Learning

Use data generated by users to improve gene prediction models

From: https://speakerdeck.com/ttfnrob/zooniverse-citizen-cyberscience-summit-2014

Robert Simpson | @orbitingfrog
Citizen Cyberscience Summit 2014 | #ccs14

PSMC

Effective population size?

Theoretical number of individuals that contribute gametes to the next generation

Why is this important?


Measure of genetic diversity


Affects selection efficiency

Used

http://en.wikipedia.org/wiki/File:Polar_Bear_-_Alaska.jpg

Effect of historical climate changes (Miller, 2012)

http://en.wikipedia.org/wiki/File:Grosser_Panda.JPG

Measure the impact of anthropogenic activity (Zhao, 2013)

http://upload.wikimedia.org/wikipedia/commons/9/9d/Grauwolf_P1130275.jpg

Discover unexpected population bottlenecks (Freedman, 2014)

http://en.wikipedia.org/wiki/File:Uomo_Vitruviano.jpg

Detect the time of divergence between populations (Li, 2011)

How to measure?


Previously hard to do

  • Highly stochastic nature of inbreeding and genetic drift
  • Other confounding factors
  • Needs a lot of specific data


Now from a diploid genome

PSMC

WebApollo

Li, 2011

Hasn't been used in insects a lot... until now!

From: http://commons.wikimedia.org/wiki/File:Ant_head_closeup.jpg

Use PSMC to answer some evolutionary questions

Is the effective population size in solitary insects > social?

Experimental design

Run PSMC across a wide range of social insects and their solitary relatives

From: http://upload.wikimedia.org/wikipedia/commons/8/85/WeaverAntDefense.JPG From: http://upload.wikimedia.org/wikipedia/commons/e/e0/Honeybee_landing_on_milkthistle02.jpg

From: http://upload.wikimedia.org/wikipedia/commons/d/d3/Coptotermes_formosanus_shiraki_USGov_k8204-7.jpg From: http://upload.wikimedia.org/wikipedia/commons/c/ca/Bush_Cockroach.jpg

Current work

Reproducing published results to master PSMC

https://upload.wikimedia.org/wikipedia/commons/1/11/Uomo_Vitruviano.jpghttps://upload.wikimedia.org/wikipedia/commons/f/ff/Wolf%2C_voor_de_natuur%2C_Saxifraga_-_Jan_Nijendijk.5097.jpg

Thank you!

Bruno Vieira | @bmpvieira

Anurag Priyam | @yeban

Yannick Wurm | @yannick__

bmpvieira.com/seminar14

© 2014 Bruno Vieira CC-BY 4.0

Crowdsource gene prediction
  • Address data "deluge" in gene prediction
  • Scale up by moving logics to browser
  • Gamify to tap into Cognitive Surplus
Effective pop. size history in insects
  • Deploy the PSMC on the servers
  • Master PSMC by reproducing results
  • Effective pop. size solitary insects > social?