Health
Tiny golden bullets could help tackle asbestos-related cancers
Gold nanotubes — tiny hollow cylinders one thousandth the width of a human hair — could be used to treat mesothelioma, a type of cancer caused by exposure to asbestos, according to a team of researchers at the Universities of Cambridge and Leeds.
In a study published today in journal Small, the researchers demonstrate that once inside the cancer cells, the nanotubes absorb light, causing them to heat up, thereby killing the cells.
More than 2,600 people are diagnosed in the UK each year with mesothelioma, a malignant form of cancer caused by exposure to asbestos. Although the use of asbestos is outlawed in the UK now, the country has the world’s highest levels of mesothelioma because it imported vast amounts of asbestos in the post-war years. The global usage of asbestos remains high, particularly in low- and middle-income countries, which means mesothelioma will become a global problem.
“Mesothelioma is one of the ‘hard-to-treat’ cancers, and the best we can offer people with existing treatments is a few months of extra survival,” said Dr Arsalan Azad from the Cambridge Institute for Medical Research at the University of Cambridge. “There’s an important unmet need for new, effective treatments.”
In 2018, the University of Cambridge was awarded £10million from the Engineering and Physical Sciences Research Council to help develop engineering solutions, including nanotech, to find ways to address hard-to-treat cancers.
In a collaboration between the University of Cambridge and University of Leeds, researchers have developed a form of gold nanotubes whose physical properties are ‘tunable’ — in other words, the team can tailor the wall thickness, microstructure, composition, and ability to absorb particular wavelengths of light.
The researchers added the nanotubes to mesothelioma cells cultured in the lab and found that they were absorbed by the cells, residing close to the nucleus, where the cell’s DNA lies. When the team targeted the cells with a laser, the nanotubes absorbed the light and heated up, killing the mesothelioma cell.
Professor Stefan Marciniak, also from the Cambridge Institute for Medical Research, added: “The mesothelioma cells ‘eat’ the nanotubes, leaving them susceptible when we shine light on them. Laser light is able to penetrate deep into tissue without causing damage to surrounding tissue. It then gets absorbed by the nanotubes, which heat up and, we hope in the future, could be used to cause localised cancer-cell killing.”
The team will be developing the work further to ensure the nanotubes are targeted to cancer cells with less effect on normal tissue.
The nanotubes are made in a two-step process. First, solid silver nanorods are created of the desired diameter. Gold is then deposited from solution onto the surface of the silver. As the gold builds-up at the surface, the silver dissolves from the inside to leave a hollow nanotube.
The approach advanced by the Leeds team allows these nanotubes to be developed at room temperature, which should make their manufacture at scale more feasible.
Professor Stephen Evans from the School of Physics and Astronomy at the University of Leeds said: “Having control over the size and shape of the nanotubes allows us to tune them to absorb light where the tissue is transparent and will allow them to be used for both the imaging and treatment of cancers. The next stage will be to load these nanotubes with medicines for enhanced therapies.”
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Materials provided by University of Cambridge. The original story is licensed under a Creative Commons License. Note: Content may be edited for style and length.
The lawmaker representing Ibarapa East/Ido Federal Constituency in the House of Representatives, Aderemi Oseni, has pledged to support the breast cancer awareness programme of the ABC Foundation founded by former Oyo First Lady, Dr. Florence Ajimobi.
Oseni, who is Chairman of the House Committee on Federal Roads Maintenance Agency (FERMA), made the commitment on Thursday in Ibadan at the flag-off of Pink Month 2025, an initiative of the foundation.
Contained in a statement by his media aide, Idowu Ayodele, the lawmaker described the campaign as a “lifesaving mission” given the rising burden of breast cancer in Nigeria, with over 28,000 new cases and thousands of deaths reported annually.
The APC chieftain said the free screening of 1,000 women planned by the foundation was timely, stressing that early detection remained the strongest weapon in the fight against cancer.
Hon. Aderemi Oseni exchanging pleasantries with former Oyo State First Lady, Dr. (Mrs.) Florence Ajimobi, at the event.
“Health is life. Only this June, I moved a motion at the National Assembly which led to the Federal Government subsidising dialysis treatment nationwide. Today, dialysis is either free or heavily discounted in federal health facilities,” Oseni said.
He listed his personal interventions to include funding hospital bills of indigent patients, construction of hospitals in Ido and Ibarapa East, establishment of primary health centres, and organisation of medical outreaches. He also disclosed plans to deploy mobile clinics to rural areas.
Commending Mrs. Ajimobi for sustaining her late husband’s legacy through humanitarian service, Oseni assured of partnership with the foundation, saying women’s wellbeing and empowerment remained central to his vision for Oyo State.
In her remarks, Mrs. Ajimobi said the foundation had offered medical care to over 85,000 patients and conducted more than 100,000 investigations since its inception. She added that the campaign was not just corporate social responsibility but “a moral duty and sacred trust.”
The former first lady, who lost her daughter Abisola to breast cancer earlier this year, said the experience had strengthened her resolve to save other families from such tragedy. She appealed to women to take advantage of the free screening and called on partners and development agencies to support the fight.
Chairman of Fidson Healthcare Plc, Dr. Fidelis Akhagboso Ayebae, and Chief Executive Officer of Hazon Holdings, Dr. Victor ’Gbenga Afolabi, are set to lead discussions at the second edition of the D’Bio Wellness & Selfcare Summit.
The event is scheduled to hold on September 24 and 25 at the Lagos Chamber of Commerce and Industry (LCCI) Conference and Exhibition Centre, Alausa, Ikeja.
This year’s summit has the theme: “Self-Care as a Driver of Optimal Health and Wellness.”
Ayebae will serve as chairman of the event, while Afolabi, who is also the co-founder of Wellness HMO, will deliver the keynote address.
Ayebae, founder of Fidson Healthcare, is regarded as one of Nigeria’s leading pharmaceutical entrepreneurs. He is a fellow of the Institute of Directors Nigeria and the Institute of Corporate Affairs Management, and has held significant roles in the Manufacturers Association of Nigeria.
Afolabi has more than 20 years’ experience spanning healthcare, finance, technology and marketing. He is also the founder of the Eko Innovation Centre, a Lagos-based technology hub that supports start-ups and young entrepreneurs.
Convener of the summit, Dr. Monica Hemben Eimunjeze, said the event would focus on practical steps to improve health outcomes through self-care.
She said, “We are excited to welcome Dr. Ayebae and Dr. Afolabi as pivotal figures in our quest to enhance health literacy and empower individuals to prioritise self-care. This summit is not just about discussions; it is about actionable insights that can inspire and transform lives.”
The organisers said the two-day summit is open to the public and will feature panel sessions with health and wellness experts, attracting healthcare professionals, advocates and business leaders.
The Federal College of Animal Health and Production Technology, Moor Plantation, Apata, Ibadan, has joined the campaign to eradicate malaria in Nigeria.
The initiative followed the unveiling of the Geneith Health Competition on the institution’s campus on Tuesday.
The competition, organised by CEOAfrica in partnership with Geneith Pharmaceuticals Limited and powered by Coatal Forte Softgel, targets students of tertiary and secondary schools nationwide to spread knowledge on malaria prevention.
Convener of the project, Mr. Cletus Ilobanafo, said the programme was designed to raise awareness through a structured health contest at the state, regional and national levels.
He said Geneith Pharmaceuticals has committed N1 billion to the project, with N400 million earmarked for scholarships and N600 million for gift items to motivate participants. “By promoting education and prevention strategies, this competition underscores the dedication of all stakeholders in combating malaria and improving public health in Nigeria,” Ilobanafo added.
The Provost of the College, Dr. Chidi Okpeze, praised the organisers for selecting the institution as a launch platform for the campaign. He expressed gratitude to President Bola Tinubu and Minister of Livestock Development, Alhaji Idi Mukhtar Maiha, for their commitment to repositioning the livestock sector to boost national growth.
“Our students are ready to key into this initiative. They are articulate, active, and have represented us well in international competitions. We are confident they will excel in this campaign too,” he said.
The Provost urged the students to brace up for the task ahead and uphold the institution’s tradition of excellence.
Some students, who spoke on behalf of their colleagues, pledged to support the anti-malaria campaign by intensifying environmental sanitation on campus. They also commended the organisers and sponsors for giving them the opportunity to contribute to the fight against malaria.
They promised to sustain clean surroundings and spread the message beyond the school to ensure malaria is eradicated from the system.
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