Researchers at the Indian Institute of Technology Hyderabad (IIT-H) have unveiled a groundbreaking innovation: gold-coated nanoparticles that deliver a dual assault on skin cancer, targeting both the tumor and its sneaky defenses. Announced recently, this development comes at a time when skin cancer cases are climbing worldwide, driven by UV exposure and environmental factors, making effective, targeted treatments more urgent than ever.
At the heart of this breakthrough are nanoparticles made of calcium peroxide cores wrapped in a thin gold shell. When hit with a near-infrared laser—a common tool in medical settings—the gold coating heats up rapidly, triggering photothermal therapy that cooks cancer cells from the inside out. This precise heat kills malignant melanoma cells, a aggressive form of skin cancer, while leaving healthy skin cells largely unharmed, as shown in rigorous lab tests on cell cultures. But the real genius lies in the dual action: as the particles break down under laser light, the calcium peroxide releases pure oxygen directly into the tumor environment.
Why does oxygen matter? Skin tumors often thrive in hypoxic—low-oxygen—conditions, which make them resistant to radiation and chemotherapy by shielding them from oxidative stress. By flooding the area with oxygen, these nanoparticles strip away that protection, sensitizing the cancer cells to further destruction and boosting the therapy’s kill rate. Lab results revealed up to 90% cell death in treated melanoma samples, far outperforming standalone heat therapy. Even better, the particles combat common secondary infections, like those from Candida albicans fungus, which complicate cancer recovery—especially vital in immunocompromised patients.
Leading the charge is IIT-H’s nanotechnology team under Jyotsnendu Giri, whose lab specializes in magnetic and noble metal nanomaterials for biomedicine. Giri’s group collaborated closely with scientists at CSIR-Indian Institute of Chemical Technology (CSIR-IICT) in Hyderabad, pooling expertise in synthesis and biological testing. “This synergy addresses key hurdles in nanotherapeutics,” notes a team statement, highlighting how the biocompatible gold shell ensures safe delivery and imaging via ultrasound or photoacoustics.
For patients in India, where skin cancer incidence is rising—particularly in sunny regions like Telangana—this could mean less invasive treatments with fewer side effects than traditional surgery or drugs. Early animal trials are underway, with human trials eyed within two years pending regulatory nods. As one researcher put it, “We’re turning nanoparticles into smart bullets against cancer’s weaknesses.” This Hyderabad innovation not only spotlights India’s growing nanotech prowess but promises real hope for the 3 lakh annual skin cancer diagnoses globally.
-Rashmi Kumari
