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Home SCIENCE NEWS Social & Behavioral Science

The Sorting Hat: An AI-powered image classifier for cell biologists

November 16, 2021
in Social & Behavioral Science
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Cell division is an important process that underlies biological growth and repair. Cell biologists track this process by observing chromosomes—structures made of DNA that contain the genetic material of an organism. Advances in microscopy along with automation have allowed researchers to snap better images of chromosomes in a short time. However, their analysis is still largely done manually, which is often a tedious task. This is especially true for plants, which show a huge variety in chromosome sizes and numbers.

A deep learning-based biological image classifier built using CreateML, a machine learning app from Apple.

Credit: Kiyotaka Nagaki from Okayama University

Cell division is an important process that underlies biological growth and repair. Cell biologists track this process by observing chromosomes—structures made of DNA that contain the genetic material of an organism. Advances in microscopy along with automation have allowed researchers to snap better images of chromosomes in a short time. However, their analysis is still largely done manually, which is often a tedious task. This is especially true for plants, which show a huge variety in chromosome sizes and numbers.

 

Now, in a recent study published in Chromosome Research,  researchers from Japan have taken a different approach. Led by Associate Professor Kiyotaka Nagaki from Okayama University, Japan, they have used deep learning artificial intelligence (AI) to classify chromosomal images from several plant species. While this in itself is nothing new, what is interesting is that the team has shown that it is possible for even non-experts to make use of AI readily.

 

How was this made possible? Dr. Nagaki explains, “Classifying images using AI usually requires a high level of computer knowledge. What we did is build AI models on a McIntosh computer with the CreateML app suitable for our own image samples. Moreover, the AI can be trained to become an order-made image classifier for any variety of  images that suits one’s purpose.”

 

The team used chromosomal images to train the deep learning models to detect images or parts of images where the cells are undergoing “mitosis,” a process where a single cell divides into two identical daughter cells. They estimated its detection accuracy with test images based on the number of cells the model correctly classified.  

 

Next, the team put the models to test with images containing mitotic cells from plant species not used during the training. To their delight, the models correctly distinguished mitotic cells in these images. In addition, the technique also worked well for cells in tissue sections and a different process of cell division.

 

These results indicate that the deep learning pipeline developed by the team can be easily and reliably used by non-data scientists across different disciplines, greatly simplifying and speeding up the task of image analysis.

 

Furthermore, the scope of this reported method can be extended towards more complex analyses such as the identification of chromosome aberrations and the development of new advisory systems for object detection and classification. “There are more trivial classifications in our lives than one might imagine. Automating such classifications by entrusting them to an AI can not only eliminate fluctuations caused by individual differences but also save many valuable research hours. Streamlining such trivial classifications make extensive image-based studies more reproducible and reliable,” says Dr. Nagaki.

 

Indeed, “a deep learning sorter that anyone can use,” as he puts it, could be our key to understanding various nuances of biological species.

 

About Okayama University, Japan

As one of the leading universities in Japan, Okayama University aims to create and establish a new paradigm for the sustainable development of the world. Okayama University offers a wide range of academic fields, which become the basis of the integrated graduate schools. This not only allows us to conduct the most advanced and up-to-date research, but also provides an enriching educational experience.

Website: https://www.okayama-u.ac.jp/index_e.html

 

 

About Associate Professor Kiyotaka Nagaki from Okayama University, Japan

Dr. Kiyotaka Nagaki is an Associate Professor at the Institute of Plant Science and Resources at Okayama University, Japan. He has worked in the field of medical and life sciences along with agricultural biology. His current research interests include the study of centromeres, histones, and chromosomes in various plant species. He has published 52 papers with over 2400 citations to his credit.



Journal

Chromosome Research

DOI

10.1007/s10577-021-09676-z

Method of Research

Imaging analysis

Subject of Research

Cells

Article Title

Effectiveness of Create ML in microscopy image classifications: a simple and inexpensive deep learning pipeline for non-data scientists

Article Publication Date

14-Oct-2021

COI Statement

None

Tags: AIpoweredbiologistscellclassifierHatimagesorting
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