future of health

University of Houston engineer's research hopes to help detect cancer cells faster and easier

This UH engineer is hoping to make his mark on cancer detection. Photo via UH.edu

Early stage cancer is hard to detect, mostly because traditional diagnostic imaging cannot detect tumors smaller than a certain size. One Houston innovator is looking to change that.

Wei-Chuan Shih, professor of electrical and computer engineering at the University of Houston's Cullen College of Engineering, recently published his findings in IEEE Sensors journal. According to a news release from UH, the cells around cancer tumors are small — ~30-150nm in diameter — and complex, and the precise detection of these exosome-carried biomarkers with molecular specificity has been elusive, until now.

"This work demonstrates, for the first time, that the strong synergy of arrayed radiative coupling and substrate undercut can enable high-performance biosensing in the visible light spectrum where high-quality, low-cost silicon detectors are readily available for point-of-care application," says Shih in the release. "The result is a remarkable sensitivity improvement, with a refractive index sensitivity increase from 207 nm/RIU to 578 nm/RIU."

Wei-Chuan Shih is a professor of electrical and computer engineering at the University of Houston's Cullen College of Engineering. Photo via UH.edu

What Shih has done is essentially restored the electric field around nanodisks, providing accessibility to an otherwise buried enhanced electric field. Nanodisks are antibody-functionalized artificial nanostructures which help capture exosomes with molecular specificity.

"We report radiatively coupled arrayed gold nanodisks on invisible substrate (AGNIS) as a label-free (no need for fluorescent labels), cost-effective, and high-performance platform for molecularly specific exosome biosensing. The AGNIS substrate has been fabricated by wafer-scale nanosphere lithography without the need for costly lithography," says Shih in the release.

This process speeds up screening of the surface proteins of exosomes for diagnostics and biomarker discovery. Current exosome profiling — which relies primarily on DNA sequencing technology, fluorescent techniques such as flow cytometry, or enzyme-linked immunosorbent assay (ELISA) — is labor-intensive and costly. Shih's goal is to amplify the signal by developing the label-free technique, lowering the cost and making diagnosis easier and equitable.

"By decorating the gold nanodisks surface with different antibodies (e.g., CD9, CD63, and CD81), label-free exosome profiling has shown increased expression of all three surface proteins in cancer-derived exosomes," said Shih. "The sensitivity for detecting exosomes is within 112-600 (exosomes/μL), which would be sufficient in many clinical applications."

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Building Houston

 
 

Check out this curated list of innovation events in Houston for February. Photo via Getty Images

It's time to look at what's on the agenda for February for Houston innovators — from pitch competitions to networking events.

Here's a roundup of events not to miss this month. Mark your calendars and register accordingly.

Note: This post might be updated to add more events.

Feb. 8 — Digital Marketing Luncheon

Join Insperity, a partner of The Cannon, and digital marketing expert, Danny Gavin, at The Cannon Downtown for a lunch and learn.

The event is Wednesday, February 8, at noon, at The Cannon Downtown. Click here to register.

Feb. 9 — Innovation on Tap: Fred Higgs, Engineering at Rice University

Discuss research in the speaker’s engineering lab at Rice University on key Industry 4.0 technologies, namely additive manufacturing.

The event is Thursday, February 9, at 4 pm, at the Ion. Click here to register.

February 10 — Women in Leadership Conference 

The 23rd annual Women in Leadership Conference will be held in-person at Rice University. The conference has been a beacon of inspiration in the Houston community, empowering women to accomplish their career goals. In panel discussions and interactive workshops, attendees hear from leaders across different industries, explore various approaches to leadership, and discuss future opportunities for success.

The event is Friday, February 10, at 8 am, at McNair Hall at Rice University. Click here to register.

Feb. 15 — Real Talk from Real VCs

Join this event for a candid fireside chat on venture capital and its role in supporting and growing innovative startups.

The event is Wednesday, February 15, at 5:30 pm, at the Ion. Click here to register.

Feb. 16 — Engage VC: Lerer Hippeau

Lerer Hippeau is an early-stage venture capital firm founded and operated in New York City. Since 2010, they have invested in entrepreneurs who embody audacity, endurance, and winning mindset – good people with great ideas who aren't afraid to do hard things. Join the HX Venture Fund to hear Caitlin Strandberg, Partner at Lerer Hippeau discuss her perspective on how to build and scale a great company, what early-stage investors are looking for, why Houston, and market trends among other topics.

The event is Thursday, February 16, at 8:30 am, at the Ion. Click here to register.

Feb. 16 — Female Founders and Funders

Calling all rockstar female founders and investors in the Houston area. Mark your calendars for this month's Female Founders and Funders meetup. Coffee and breakfast is provided and the event is free to attend.

The event is Thursday, February 16, at 9 am, at Sesh Coworking. Click here to register.

Feb. 21 — Web3 & HOU: Demystifying the Web3 Space Panel I

Join us to learn more about Web3 and its numerous applications.

The event is Tuesday, February 21, at 6 pm, at the Ion. Click here to register.

Feb. 22 — The Trailblazer’s Guide to Cultivating Authenticity

In this fun and interactive workshop presented by Erica D’Eramo of Two Peirs Consulting, we’ll look at how to foster a leadership style that works for you, even in the absence of role models.

The event is Wednesday, February 22, at 2 pm, at Sesh Coworking. Click here to register.

Feb. 22 — Houston Startup Showcase

The Houston Startup Showcase is a year-long series of monthly pitch competitions. Founders will pitch at the Ion and compete for the grand prize package. Watch the startups pitch their company and see who the judges will name the champion of the Houston Startup Showcase 2023.

The event is Wednesday, February 22, at 6 pm, at the Ion. Click here to register.

Feb. 23 — Navigating Innovation in the Corporate World

Join us for a fireside chat with leaders from Houston's largest employers, including Microsoft and Chevron to discuss how they have navigated successful careers in technology and innovation.

The event is Thursday, February 23, at 11:30 am, at the Ion. Click here to register.

Feb. 27-March 2 — Houston Tech Rodeo

The Houston Tech Rodeo is a conference showcasing the best and brightest of the Houston startup community in the region and beyond by putting investors, entrepreneurs, industry leaders, and creative minds in a room to talk about the biggest innovations and the future of tech sandwiched by some happy hours and friendly competition.

The events run Monday, February 27, through Thursday, March 2, at various locations in Houston. Click here to register.

Note: This post might be updated to add more events.


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