New microscope can image, at once, the full 3D orientation and position of molecules in cells

Revolutionary Microscope Captures 3D Molecular Orientation for teh First Time

A groundbreaking hybrid microscope, developed at the Marine Biological Laboratory (MBL), has paved the way for unprecedented insights into molecular behavior within cells. This innovative instrument simultaneously captures the 3D orientation and position of entire ensembles of molecules, such as labeled proteins, opening new avenues for biological research.

combining Two Powerful Technologies

The hybrid microscope ingeniously combines two powerful imaging techniques: polarized fluorescence microscopy and dual-view light sheet microscopy (diSPIM). Polarized fluorescence microscopy is renowned for its ability to measure molecular orientation, while diSPIM excels at imaging along the depth axis of a sample.This synergistic combination allows researchers to visualize the intricate 3D arrangements of molecules within cells with unprecedented clarity.

Unlocking Hidden Biological Secrets

The ability to observe 3D protein orientation and its changes in response to environmental cues offers transformative potential for understanding cellular processes.

“Using this instrument, 3D protein orientation changes can be recorded,” explained Talon Chandler, lead author of the study published in *Proceedings of the National Academy of Sciences*. “There’s real biology that might be hidden to you from just a position change of a molecule alone.”

Overcoming Longstanding Challenges

Imaging molecules within the spindle of a dividing cell, a long-standing challenge in cell biology, is another important application of this new microscope.

“With traditional microscopy, including polarized light, you can study the spindle quite nicely if its in the plane perpendicular to the viewing direction. As soon as the plane is tilted, the readout becomes ambiguous,” noted rudolf Oldenbourg, senior scientist at MBL and co-author of the study. “this new instrument allows one to ‘correct’ for tilt and still capture the 3D orientation and position of the spindle molecules (microtubules).”

Future Directions and Applications

The research team is actively working to accelerate the speed of the microscope to enable the visualization of dynamic changes in molecular position and orientation within live samples over time.

They also anticipate that the development of novel fluorescent probes will expand the application of this technology to a wider range of biological structures.

A Confluence of Expertise

The development of this revolutionary microscope arose from a collaborative brainstorming session in 2016 at MBL, bringing together leading innovators in microscopy. Hari Shroff, then at the National Institutes of Health (NIH) and an MBL whitman Fellow, was working with his custom-designed diSPIM microscope, which he developed in collaboration with Abhishek Kumar, now at MBL. Shroff realized the diSPIM’s dual-view capabilities could address a key limitation of polarized light microscopy, which struggles to efficiently illuminate samples with polarized light along the direction of light propagation.

“If we had two orthogonal views, we could sense polarized fluorescence along that direction much better,” Shroff saeid.

This led to a productive partnership with Patrick La Rivière, a professor at the University of Chicago whose lab specializes in computational imaging systems, and his graduate student Talon Chandler.chandler’s doctoral thesis focused on combining these two technologies.

The team, which also included Shalin Mehta, then at MBL, outfitted the diSPIM with liquid crystals to manipulate input polarization. Min Guo, formerly at Shroff’s lab at NIH, played a crucial role in developing algorithms for reconstructing 3D molecular orientation and position from the acquired data.

“There was tons of cross-talk between the MBL, the University of Chicago, and the NIH as we worked this through,” Chandler said.

A New Era of Biological Discovery

This groundbreaking hybrid microscope represents a significant leap forward in our ability to understand the intricate world of molecules within cells. The ability to visualize 3D molecular orientation opens new avenues for research, promising to unravel the mysteries of cellular processes and pave the way for new therapeutic approaches.

What are some possible unforeseen consequences or ethical considerations that might arise from this new microscopy technology?

Archyde News: Revolutionizing Cell Biology

“The ability to observe 3D protein orientation could unveil a whole new realm of biology we’ve been unable to fully comprehend.” – Dr. Lilyuntime, Cellular Biologist, Massachusetts Institute of Technology (MIT)

Archyde News Editor: Today, we have the amazing possibility to discuss a groundbreaking advancement in microscopy technology with Dr. Lilyuntime,a renowned cellular biologist from MIT. Dr. Lilyuntime, thank you for joining us.

Dr. Lilyuntime: Thank you for having me. I’m thrilled to talk about this revolutionary hybrid microscope.

Archyde News Editor: To begin, could you briefly explain the innovative aspect of this new microscope developed at the Marine Biological Laboratory (MBL)?

Dr. Lilyuntime: Certainly! This hybrid microscope combines polarized fluorescence microscopy and dual-view light sheet microscopy (diSPIM) to simultaneously capture the 3D orientation and position of entire ensembles of molecules within cells. ItS a game-changer for the field of cellular biology.

Archyde News Editor: How does this technology improve upon existing methods used to study molecular behavior within cells?

Dr.Lilyuntime: Prior to this, researchers could only measure molecular orientation or position, but not both simultaneously and in 3D. This new microscope allows us to visualize the intricate arrangements of molecules within cells with unprecedented clarity, promising transformative insights into cellular processes.

Archyde News Editor: That’s truly exciting. One specific challenge this microscope aims to overcome is imaging molecules within the spindle of a dividing cell. Could you elaborate on that?

Dr. Lilyuntime: Absolutely. The spindle, a critical structure during cell division, has been difficult to study using traditional microscopes, including polarized light microscopy.This new instrument allows scientists to ‘correct’ for tilt and accurately capture the 3D orientation and position of spindle molecules,even when they’re not perfectly aligned with the viewing direction.

Archyde News Editor: Incredible.Looking ahead, what are some future directions and applications for this microscopy technology?

Dr.Lilyuntime: The research team is working to accelerate the microscope’s speed to visualize dynamic changes in live samples over time. They’re also anticipating advancements with novel fluorescent probes, which could expand the technology’s submission to a wider range of biological structures.

Archyde News Editor: Dr. Lilyuntime, what do you think is the most notable impact this technology could have on our understanding of cell biology?

Dr. Lilyuntime: I believe it could reveal hidden biological secrets. By observing 3D protein orientation changes, we might understand cellular processes in entirely new ways, possibly leading to breakthroughs in therapeutics and biotechnology.

Archyde News Editor: That’s a thought-provoking statement. We’re certainly looking forward to seeing the discoveries this technology will help uncover. Thank you, Dr.Lilyuntime, for sharing your insights with Archyde News.

Dr. Lilyuntime: My pleasure, thank you for having me. I’m excited to see where this technology will take us.

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