News
ICViewExpert PerspectivesMedical World NewsPathogen PlaybookVideosWebinars
Conference CoverageConference ListingAPIC Chapters
Infection Control TodaySupplements And Featured Publications
CME/CEEditorial Advisory BoardJob BoardPartnersSponsoredWhitepapers
Subscribe
Educator of the Year Official Rules2024 Educator of the Year Winner2023 Educator of the Year WinnerEducator of the Year
Advanced TechnologyAdvanced TechnologyAdvanced Technology
Bug of the Month
COVID-19
Environmental ServicesEnvironmental Services
HAIs
Hand Hygiene
IC Trends
Long-Term CareLong-Term Care
Operating Room
Personal Protective EquipmentPersonal Protective Equipment
Policy
PreventionPreventionPreventionPrevention
Sterile ProcessingSterile Processing
Surface Disinfection
Vascular Access
Spotlight -
  • IC Trends
  • Bug of the Month
  • Featured Articles
  • Featured Columns
  • Pathogen Playbook
Advanced TechnologyAdvanced TechnologyAdvanced Technology
Bug of the Month
COVID-19
Environmental ServicesEnvironmental Services
HAIs
Hand Hygiene
IC Trends
Long-Term CareLong-Term Care
Operating Room
Personal Protective EquipmentPersonal Protective Equipment
Policy
PreventionPreventionPreventionPrevention
Sterile ProcessingSterile Processing
Surface Disinfection
Vascular Access
    • News
    • Subscribe
Advertisement

Yeast Spotlights Genetic Variation's Link to Drug Resistance

October 18, 2017
Article

Researchers have shown that genetic diversity plays a key role in enabling drug resistance to evolve. Scientists at the Wellcome Trust Sanger Institute and the Institute for Research on Cancer and Ageing of Nice in France, show that high genetic diversity can prime new mutations that cause drug resistance. The study published in Cell Reports has implications for our understanding of the evolution of resistance to antimicrobial and anticancer drugs.

The World Health Organization classes antimicrobial resistance as one of the biggest threats to global health today. Currently 700,000 deaths a year worldwide*, with 25,000 of those in the EU and 23,000 in the USA are linked to antimicrobial resistance. These figures are projected** to rise to 10 million deaths a year by 2050 if nothing is done to tackle the problem. Equally, cancer is linked to 8.2 million annual deaths worldwide, with chemotherapy resistance a major limitation to treatment.

Previous studies had linked high genetic diversity within bacterial infections or in cancers with poor outcomes for patients treated with antimicrobial or chemotherapy drugs. Researchers in this study used budding yeast, creating populations of cells with more than 10 million different randomised genomes, to investigate how genetic diversity affected resistance. They evolved these to grow in antimicrobial drugs over 4 weeks and then studied the sensitive and resistant yeast cells.

Dr Ignacio Vazquez-Garcia, the first author from the Wellcome Trust Sanger Institute and University of Cambridge, said: "We found that the degree of diversity within the cell population - known as clonal heterogeneity - played a major role in the acquisition of antimicrobial resistance. By sequencing the genomes of sensitive and resistant cells we showed that some cells were pre-adapted, or primed, while other cells acquired new mutations to gain resistance."

By then crossing the evolved strains, the researchers were able to investigate the complex evolutionary processes involved in developing resistance. They were able to see not only which mutations drove resistance - called driver mutations - but also how the background mutations affected these.

They discovered two types of driver mutations. Cells with weak driver mutations needed other background mutations to grow well in antimicrobial drugs, however cells with strong driver mutations developed resistance to drugs regardless of the genetic background.

Professor Gianni Liti, a senior author on the paper from the Institute for Research on Cancer and Ageing, Nice, said: "We were able to study the evolution in time by combining genome sequences of the cell populations and tracking the growth characteristics of the yeast cells. We found that the genetic background had a major influence on whether or not weaker mutations would confer drug resistance, and in these cases many different cells adapted in a wave. However, with any genetic background, cells with strong driver mutations could "leapfrog" and outcompete other cells growing in the drugs."

Professor Ville Mustonen, senior author from the University of Helsinki and previously at the Wellcome Trust Sanger Institute, said: "Our study helps understand the evolution of drug resistance, and has implications not just for yeast, but also for bacteria and cancer. Whilst further study is needed, we are building evidence to show that genetic diversity in a bacterial infection or in a tumour being treated could lay the foundation for resistance to the therapy and affect how quickly resistance develops."

Source: Wellcome Trust Sanger Institute



Recent Videos
Pathogen Playbook Presenter: Sharon Ward-Fore, BS, MS, MT(ASCP), CIC, FAPIC
Mark Wiencek, PhD
Rebecca Crapanzano-Sigafoos, DrPH, CIC, AL-CIP, FAPIC
The CDC’s updated hospital respiratory reporting requirement has added new layers of responsibility for infection preventionists. Karen Jones, MPH, RN, CIC, FAPIC, clinical program manager at Wolters Kluwer, breaks down what it means and how IPs can adapt.
Studying for the CIC using a digital tablet and computer (Adobe Stock 335828989 by NIKCOA)
Infection Control Today's Conversations with the HSPA President, Arlene Bush, CRCST, CER, CIS, SME, DSMD, CRMST
Infection Control Today's Conversations with the HSPA President, Arlene Bush, CRCST, CER, CIS, SME, DSMD, CRMST
Cheron Rojo, BS, FCS, CHL,  CER, CFER, CRCST
Matthias Tschoerner, Dr Sc
Standardizing Cleaning and Disinfection
Related Content

Hot Topics With Saskia v. Popescu, PhD, MPH, MA, CIC, FAPIC

Hot Topics for IPC on July 2, 2025

Saskia v. Popescu, PhD, MPH, MA, CIC, FAPIC
July 2nd 2025
Article

This Hot Topics for IPC covers the latest on ASPR, AMR, vaccines, and a study on AMR and livestock manure from Michigan State University.


The Clean Bite

Personal Protective Equipment (PPE) for Dental Professionals: A Layered Defense

Sherrie Busby, EDDA, CDSO, CDIPC
July 1st 2025
Article

Dental infection control expert Sherrie Busby tackles PPE missteps, from chin-bra masks to cropped lab coats, reminding dental teams that proper protection is crucial, not optional.


Rebecca Battjes, MPH, CIC, FAPIC; Vidya Nankoosingh, MLT, CIC; and Peter Teska, MBA

Beyond the Surface: Rethinking Environmental Hygiene Validation at Exchange25

Tori Whitacre Martonicz
June 30th 2025
Article

Environmental hygiene is about more than just shiny surfaces. At Exchange25, infection prevention experts urged the field to look deeper, rethink blame, and validate cleaning efforts across the entire care environment, not just EVS tasks.


ACIP decides on vaccinations   (Adobe Stock 606491608 by N Lawrenson/peopleimages.com)

New ACIP Panel Backs Seasonal Flu, RSV Vaccinations, but Divisions Emerge Over Thimerosal and Infant Dosing

Richard Payerchin
June 27th 2025
Article

In its first major session under newly appointed leadership, the revamped Advisory Committee on Immunization Practices (ACIP) voted to support flu and RSV vaccinations for the 2025–2026 season, but internal debate over vaccine preservatives, access equity, and risk assessment highlighted the ideological and scientific tensions now shaping federal vaccine policy.


US Department of Health and Human Services

A Controversial Reboot: New Vaccine Panel Faces Scrutiny, Support, and Sharp Divides

Richard Payerchin
June 26th 2025
Article

As the newly appointed Advisory Committee on Immunization Practices (ACIP) met for the first time under sweeping changes by HHS Secretary Robert F. Kennedy Jr, the national spotlight turned to the panel’s legitimacy, vaccine guidance, and whether science or ideology would steer public health policy in a polarized era.


Jill Holdsworth, CIC, FAPIC, NREMT, CRCST, CHL; and Katie Belski, BSHCA, CRCST, CHL, CIS, CER, At HSPA25

Getting Down and Dirty With PPE: Presentations at HSPA by Jill Holdsworth and Katie Belski

Betsy Donahue, MA
June 26th 2025
Article

In the heart of the hospital, decontamination technicians tackle one of health care’s dirtiest—and most vital—jobs. At HSPA 2025, 6 packed workshops led by experts Jill Holdsworth and Katie Belski spotlighted the crucial, often-overlooked art of PPE removal. The message was clear: proper doffing saves lives, starting with your own.

Related Content

Hot Topics With Saskia v. Popescu, PhD, MPH, MA, CIC, FAPIC

Hot Topics for IPC on July 2, 2025

Saskia v. Popescu, PhD, MPH, MA, CIC, FAPIC
July 2nd 2025
Article

This Hot Topics for IPC covers the latest on ASPR, AMR, vaccines, and a study on AMR and livestock manure from Michigan State University.


The Clean Bite

Personal Protective Equipment (PPE) for Dental Professionals: A Layered Defense

Sherrie Busby, EDDA, CDSO, CDIPC
July 1st 2025
Article

Dental infection control expert Sherrie Busby tackles PPE missteps, from chin-bra masks to cropped lab coats, reminding dental teams that proper protection is crucial, not optional.


Rebecca Battjes, MPH, CIC, FAPIC; Vidya Nankoosingh, MLT, CIC; and Peter Teska, MBA

Beyond the Surface: Rethinking Environmental Hygiene Validation at Exchange25

Tori Whitacre Martonicz
June 30th 2025
Article

Environmental hygiene is about more than just shiny surfaces. At Exchange25, infection prevention experts urged the field to look deeper, rethink blame, and validate cleaning efforts across the entire care environment, not just EVS tasks.


ACIP decides on vaccinations   (Adobe Stock 606491608 by N Lawrenson/peopleimages.com)

New ACIP Panel Backs Seasonal Flu, RSV Vaccinations, but Divisions Emerge Over Thimerosal and Infant Dosing

Richard Payerchin
June 27th 2025
Article

In its first major session under newly appointed leadership, the revamped Advisory Committee on Immunization Practices (ACIP) voted to support flu and RSV vaccinations for the 2025–2026 season, but internal debate over vaccine preservatives, access equity, and risk assessment highlighted the ideological and scientific tensions now shaping federal vaccine policy.


US Department of Health and Human Services

A Controversial Reboot: New Vaccine Panel Faces Scrutiny, Support, and Sharp Divides

Richard Payerchin
June 26th 2025
Article

As the newly appointed Advisory Committee on Immunization Practices (ACIP) met for the first time under sweeping changes by HHS Secretary Robert F. Kennedy Jr, the national spotlight turned to the panel’s legitimacy, vaccine guidance, and whether science or ideology would steer public health policy in a polarized era.


Jill Holdsworth, CIC, FAPIC, NREMT, CRCST, CHL; and Katie Belski, BSHCA, CRCST, CHL, CIS, CER, At HSPA25

Getting Down and Dirty With PPE: Presentations at HSPA by Jill Holdsworth and Katie Belski

Betsy Donahue, MA
June 26th 2025
Article

In the heart of the hospital, decontamination technicians tackle one of health care’s dirtiest—and most vital—jobs. At HSPA 2025, 6 packed workshops led by experts Jill Holdsworth and Katie Belski spotlighted the crucial, often-overlooked art of PPE removal. The message was clear: proper doffing saves lives, starting with your own.

Advertise
About Us
Editorial Board
Contact Us
Job Board
Terms and Conditions
Privacy
Do Not Sell My Personal Information
Contact Info

2 Commerce Drive
Cranbury, NJ 08512

609-716-7777

© 2025 MJH Life Sciences

All rights reserved.
Home
About Us
News